diff --git a/Modules/NSIS.template.in b/Modules/NSIS.template.in
index b910a3ec7..ee2a1abed 100644
--- a/Modules/NSIS.template.in
+++ b/Modules/NSIS.template.in
@@ -394,7 +394,10 @@ FunctionEnd
 ;--------------------------------
 ; Define some macro setting for the gui
 
-  !define MUI_HEADERIMAGE_BITMAP "@CPACK_PACKAGE_ICON@"
+  !define CPACK_PACKAGE_ICON@CPACK_PACKAGE_ICON@
+  !ifndef CPACK_PACKAGE_ICON
+    !define MUI_HEADERIMAGE_BITMAP "@CPACK_PACKAGE_ICON@"
+  !endif
 
 ;--------------------------------
 ;Pages