diff --git a/src/Mod/Draft/Resources/ui/preferences-draft.ui b/src/Mod/Draft/Resources/ui/preferences-draft.ui
index c7c35f39c6..217cfa98d2 100755
--- a/src/Mod/Draft/Resources/ui/preferences-draft.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-draft.ui
@@ -220,6 +220,9 @@
           <property name="toolTip">
            <string>The number of decimals in internal coordinates operations (for ex. 3 = 0.001). Values between 6 and 8 are usually considered the best trade-off among FreeCAD users.</string>
           </property>
+          <property name="maximum">
+           <number>10</number>
+          </property>
           <property name="value">
            <number>6</number>
           </property>