diff --git a/src/libprs500/__init__.py b/src/libprs500/__init__.py
index 5662a29002..5e2bfdc166 100644
--- a/src/libprs500/__init__.py
+++ b/src/libprs500/__init__.py
@@ -449,4 +449,4 @@ def singleinstance(name):
         except IOError:
             return False
         
-    return True
+    return False