diff --git a/Contrib/nsDialogs/example.nsi b/Contrib/nsDialogs/example.nsi
index 39ccaa5b..370d9760 100644
--- a/Contrib/nsDialogs/example.nsi
+++ b/Contrib/nsDialogs/example.nsi
@@ -45,12 +45,16 @@ FunctionEnd
 
 Function OnClick
 
+	Pop $0 # HWND
+
 	MessageBox MB_OK clicky
 
 FunctionEnd
 
 Function OnChange
 
+	Pop $0 # HWND
+
 	System::Call user32::GetWindowText(i$EDIT,t.r0,i${NSIS_MAX_STRLEN})
 
 	${If} $0 == "hello there"
@@ -68,6 +72,8 @@ FunctionEnd
 
 Function OnCheckbox
 
+	Pop $0 # HWND
+
 	MessageBox MB_OK "checkbox clicked"
 
 FunctionEnd