diff --git a/bin/make_installscript.py b/bin/make_installscript.py
index 89a2a088ddb85d60bf16ec13cecb1fb8b10b7306..bf1c0627264d68975ac905632b3a9e1733ef1aa8 100755
--- a/bin/make_installscript.py
+++ b/bin/make_installscript.py
@@ -109,7 +109,7 @@ def runMakeInstallScript():
     modName = getModuleInfo(modPath, "Module")
     printProgressInfo([f"Creating install script for module '{modName}' in folder '{modPath}'"])
 
-    scriptName = cmdArgs.get("filename")
+    scriptName = cmdArgs["filename"]
     if not scriptName:
         scriptName = getDefaultScriptName(modName, cmdArgs["language"])