diff --git a/Makefile.in b/Makefile.in
index 082f722ef4..a55a738fea 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -568,4 +568,3 @@ mjit_config.h:
 	\
 	echo '#endif /* RUBY_MJIT_CONFIG_H */'; \
 	} > $@
-	cat $@ # debugging