diff --git a/tests/test_helper.c b/tests/test_helper.c
index c7604f0c..2faf4da6 100644
--- a/tests/test_helper.c
+++ b/tests/test_helper.c
@@ -32,7 +32,7 @@ static void test_undefined(void)
 
 static void test_undefined_branch(void)
 {
-       	int x;
+	int x;
 	trick_compiler(&x);
 
 	if (x)