diff --git a/examples/Makefile b/examples/Makefile
index 65f933e..95558a7 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -47,5 +47,5 @@ clean:
 	$(RM) other/cat_noblock *.plist
 
 indent:
-	clang-format -i *[.ch]
-	clang-format -i other/*[.ch]
+	clang-format -i *.[ch]
+	clang-format -i other/*.[ch]