diff --git a/cmake/templates/NSIS.template.in b/cmake/templates/NSIS.template.in
index c7d2f05fb5..efae56339b 100644
--- a/cmake/templates/NSIS.template.in
+++ b/cmake/templates/NSIS.template.in
@@ -1245,6 +1245,9 @@ Function .onInit
     Quit
   !endif
 
+  ; make sure none of the installed applications are still running
+  !insertmacro CheckForRunningApplications
+
   StrCmp "@CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL@" "ON" 0 inst
 
   ReadRegStr $0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@CPACK_PACKAGE_INSTALL_REGISTRY_KEY@" "UninstallString"