diff --git a/sqlreduce/main.py b/sqlreduce/main.py
index 62911f9..f83c005 100755
--- a/sqlreduce/main.py
+++ b/sqlreduce/main.py
@@ -28,7 +28,7 @@ def sqlreduce_main():
         query = args.file.read().rstrip()
 
     # check database connection
-    if not '=' in args.database:
+    if not '=' in args.database and not "postgres://" in args.database:
         args.database = f"dbname={args.database}"
     sqlreduce.check_connection(args.database)