diff --git a/compiler/tests/04_pinvbuf_test.py b/compiler/tests/04_pinvbuf_test.py
index ffe6fa33..3b16c1c9 100755
--- a/compiler/tests/04_pinvbuf_test.py
+++ b/compiler/tests/04_pinvbuf_test.py
@@ -21,7 +21,7 @@ class pinvbuf_test(openram_test):
         import pinvbuf
 
         debug.info(2, "Testing inverter/buffer 4x 8x")
-        a = pinvbuf.pinvbuf(4,8)
+        a = pinvbuf.pinvbuf(8)
         self.local_check(a)
 
         globals.end_openram()