diff --git a/tests/Internals/has_shebang_line b/tests/Internals/has_shebang_line
index d18ee8f..ad612f4 100755
--- a/tests/Internals/has_shebang_line
+++ b/tests/Internals/has_shebang_line
@@ -10,11 +10,11 @@ echo '!#/usr/bin/env true' > $tmp
 has_shebang_line $tmp
 
 echo > $tmp
-has_shebang_line $tmp
+! has_shebang_line $tmp
 
 echo '
 
 
 
 ' > $tmp
-has_shebang_line $tmp
+! has_shebang_line $tmp