diff --git a/src/Gui/Stylesheets/Dark-blue.qss b/src/Gui/Stylesheets/Dark-blue.qss
index 40e7278d3d..3c06b815f8 100644
--- a/src/Gui/Stylesheets/Dark-blue.qss
+++ b/src/Gui/Stylesheets/Dark-blue.qss
@@ -644,7 +644,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #505050; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1678,7 +1678,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1692,8 +1692,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #7cabf9; /* slighly lighter than default */
-    border-color: #2053c0; /* slighly darker than default */
+    background-color: #7cabf9; /* slightly lighter than default */
+    border-color: #2053c0; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2169,7 +2169,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }
diff --git a/src/Gui/Stylesheets/Dark-green.qss b/src/Gui/Stylesheets/Dark-green.qss
index d11a758ef6..025eb4ea49 100644
--- a/src/Gui/Stylesheets/Dark-green.qss
+++ b/src/Gui/Stylesheets/Dark-green.qss
@@ -644,7 +644,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #505050; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1678,7 +1678,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1692,8 +1692,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #a5c61a; /* slighly lighter than default */
-    border-color: #74831d; /* slighly darker than default */
+    background-color: #a5c61a; /* slightly lighter than default */
+    border-color: #74831d; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2169,7 +2169,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }
diff --git a/src/Gui/Stylesheets/Dark-orange.qss b/src/Gui/Stylesheets/Dark-orange.qss
index e2a9d765a2..8b6eb698b7 100644
--- a/src/Gui/Stylesheets/Dark-orange.qss
+++ b/src/Gui/Stylesheets/Dark-orange.qss
@@ -644,7 +644,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #505050; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1678,7 +1678,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1692,8 +1692,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #e3b64d; /* slighly lighter than default */
-    border-color: #b28416; /* slighly darker than default */
+    background-color: #e3b64d; /* slightly lighter than default */
+    border-color: #b28416; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2169,7 +2169,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }
diff --git a/src/Gui/Stylesheets/Light-blue.qss b/src/Gui/Stylesheets/Light-blue.qss
index 9289b6dd31..ccdea8bd85 100644
--- a/src/Gui/Stylesheets/Light-blue.qss
+++ b/src/Gui/Stylesheets/Light-blue.qss
@@ -643,7 +643,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #c3c3c3; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1675,7 +1675,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1689,8 +1689,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #7cabf9; /* slighly lighter than default */
-    border-color: #2053c0; /* slighly darker than default */
+    background-color: #7cabf9; /* slightly lighter than default */
+    border-color: #2053c0; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2166,7 +2166,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }
diff --git a/src/Gui/Stylesheets/Light-green.qss b/src/Gui/Stylesheets/Light-green.qss
index 88f7442237..01cdf7b243 100644
--- a/src/Gui/Stylesheets/Light-green.qss
+++ b/src/Gui/Stylesheets/Light-green.qss
@@ -643,7 +643,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #c3c3c3; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1675,7 +1675,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1689,8 +1689,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #a5c61a; /* slighly lighter than default */
-    border-color: #74831d; /* slighly darker than default */
+    background-color: #a5c61a; /* slightly lighter than default */
+    border-color: #74831d; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2166,7 +2166,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }
diff --git a/src/Gui/Stylesheets/Light-orange.qss b/src/Gui/Stylesheets/Light-orange.qss
index 8200d09972..e8e8515a2b 100644
--- a/src/Gui/Stylesheets/Light-orange.qss
+++ b/src/Gui/Stylesheets/Light-orange.qss
@@ -643,7 +643,7 @@ QDockWidget QListView,
 QDockWidget QTableView {
     margin: 6px;
     border: 1px solid #c3c3c3; /* same as regular QTreeView, QListView and QTableView */
-    min-height: 40px; /* neccesary in some areas of FreeCAD */
+    min-height: 40px; /* necessary in some areas of FreeCAD */
 }
 
 /* Buttons to scroll tabs if there is not space to show all of them: */
@@ -1675,7 +1675,7 @@ QTreeView::indicator {
     border-radius:2px;
 }
 
-/* fix for QTreeView::indicator loosing its margin */
+/* fix for QTreeView::indicator losing its margin */
 QTreeView::indicator {
     margin: 3px;
 }
@@ -1689,8 +1689,8 @@ QListWidget::indicator:checked:selected,
 QListWidget::indicator:indeterminate:selected,
 QTreeView::indicator:checked:selected,
 QTreeView::indicator:indeterminate:selected {
-    background-color: #e3b64d; /* slighly lighter than default */
-    border-color: #b28416; /* slighly darker than default */
+    background-color: #e3b64d; /* slightly lighter than default */
+    border-color: #b28416; /* slightly darker than default */
 }
 
 QListWidget::indicator:pressed,
@@ -2166,7 +2166,7 @@ QToolBar#Selector QToolButton:!checked:pressed {
 EXPERIMENTAL
 ==================================================================================================*/
 
-/* Fix for preventing elements in different rows to accidentaly overlap */
+/* Fix for preventing elements in different rows to accidentally overlap */
 QDialog QGroupBox QFrame {
     margin: 2px 0px;
 }