diff --git a/Makefile.am b/Makefile.am
index bcf0f0edf673bbdd59ddf01ddb8b8f1bb86e0c5a..78a21ed185710d7f00c499d30855ea327064a71f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -527,6 +527,7 @@ else
 endif
 TESTS = $(check_SCRIPTS)
 %.sh: %
+	@echo "#!/bin/bash" > $@
 	@echo $(wrapper) ./$^ '$$TEST_FLAGS' >> $@
 	@chmod +x $@