diff --git a/tests/regression.at b/tests/regression.at
index f8768f76..e0f0cd53 100644
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -51,7 +51,7 @@ exp: MY_TOKEN;
 ]])
 
 AT_CHECK([bison input.y -o input.c])
-AT_COMPILE([input], [-c input.c])
+AT_COMPILE([input.o], [-c input.c])
 
 AT_CLEANUP
 
@@ -328,7 +328,7 @@ exp: "a";
 ]])
 
 AT_CHECK([bison input.y -o input.c])
-AT_COMPILE([input], [input.c -c])
+AT_COMPILE([input.o], [-c input.c])
 AT_CLEANUP