diff --git a/get-poetry.py b/get-poetry.py
index 16e4bdcddfd..6bb0a03043f 100644
--- a/get-poetry.py
+++ b/get-poetry.py
@@ -352,7 +352,9 @@ def run(self):
         version, current_version = self.get_version()
 
         if version is None:
-            return 0
+            if current_version is not None:
+                return 0
+            return 1
 
         self.customize_install()
         self.display_pre_message()