diff --git a/Makefile b/Makefile
index 4bee950..7e30820 100644
--- a/Makefile
+++ b/Makefile
@@ -12,5 +12,5 @@ local:
 	@.venv/bin/python octomode.py
 
 action:
-	@if [ ! ".venv/bin/gunicorn" ]; then .venv/bin/pip install gunicorn; fi
+	@if [ ! -f ".venv/bin/gunicorn" ]; then .venv/bin/pip install gunicorn; fi
 	@SCRIPT_NAME=${OCTOMODE_APPLICATION_ROOT} .venv/bin/gunicorn -b localhost:${OCTOMODE_PORTNUMBER} --reload octomode:APP