diff --git a/src/Mod/TechDraw/App/DrawRichAnno.cpp b/src/Mod/TechDraw/App/DrawRichAnno.cpp
index fb3f6942cf..bff24be48a 100644
--- a/src/Mod/TechDraw/App/DrawRichAnno.cpp
+++ b/src/Mod/TechDraw/App/DrawRichAnno.cpp
@@ -76,10 +76,11 @@ void DrawRichAnno::onChanged(const App::Property* prop)
 
 }
 
+//NOTE: DocumentObject::mustExecute returns 1/0 and not true/false
 short DrawRichAnno::mustExecute() const
 {
     if (!isRestoring() && AnnoText.isTouched()) {
-        return true;
+        return 1;
     }
 
     return DrawView::mustExecute();
diff --git a/src/Mod/TechDraw/App/DrawViewArch.cpp b/src/Mod/TechDraw/App/DrawViewArch.cpp
index da68a89a4b..6cfe5791de 100644
--- a/src/Mod/TechDraw/App/DrawViewArch.cpp
+++ b/src/Mod/TechDraw/App/DrawViewArch.cpp
@@ -75,6 +75,7 @@ DrawViewArch::~DrawViewArch()
 {
 }
 
+//NOTE: DocumentObject::mustExecute returns 1/0 and not true/false
 short DrawViewArch::mustExecute() const
 {
     if (!isRestoring()) {
@@ -89,7 +90,7 @@ short DrawViewArch::mustExecute() const
             CutLineWidth.isTouched() ||
             JoinArch.isTouched()
         ) {
-            return true;
+            return 1;
         }
     }
     return DrawViewSymbol::mustExecute();
diff --git a/src/Mod/TechDraw/App/DrawViewBalloon.cpp b/src/Mod/TechDraw/App/DrawViewBalloon.cpp
index 225d8248a5..ba4c9e1b7e 100644
--- a/src/Mod/TechDraw/App/DrawViewBalloon.cpp
+++ b/src/Mod/TechDraw/App/DrawViewBalloon.cpp
@@ -197,6 +197,7 @@ void DrawViewBalloon::handleChangedPropertyType(Base::XMLReader &reader, const c
     }
 }
 
+//NOTE: DocumentObject::mustExecute returns 1/0 and not true/false
 short DrawViewBalloon::mustExecute() const
 {
     if (!isRestoring() && Text.isTouched()) {
diff --git a/src/Mod/TechDraw/App/DrawViewClip.cpp b/src/Mod/TechDraw/App/DrawViewClip.cpp
index 479f89275b..11d785aaf5 100644
--- a/src/Mod/TechDraw/App/DrawViewClip.cpp
+++ b/src/Mod/TechDraw/App/DrawViewClip.cpp
@@ -122,13 +122,14 @@ App::DocumentObjectExecReturn *DrawViewClip::execute(void)
     return DrawView::execute();
 }
 
+//NOTE: DocumentObject::mustExecute returns 1/0 and not true/false
 short DrawViewClip::mustExecute() const
 {
     if (!isRestoring()) {
         if (Height.isTouched() ||
             Width.isTouched() ||
             Views.isTouched()) {
-            return true;
+            return 1;
         }
     }
     return TechDraw::DrawView::mustExecute();