diff --git a/tests/hello/Makefile b/tests/hello/Makefile
index 75f761fa..ffeef4ce 100644
--- a/tests/hello/Makefile
+++ b/tests/hello/Makefile
@@ -34,6 +34,7 @@ CFLAGS_ULP += -O0
 ifdef ULP_PIC
 	CFLAGS_ULP += -fpic
 	CFLAGS_ULP += -fno-PIE
+	CFLAGS_ULP += -fno-common
 endif
 
 LDFLAGS_ULP :=
diff --git a/tests/hello/patch-failed-bss.c b/tests/hello/patch-failed-bss.c
index 75c742db..9c6becd9 100644
--- a/tests/hello/patch-failed-bss.c
+++ b/tests/hello/patch-failed-bss.c
@@ -12,5 +12,6 @@ static int static_i;
 void ulp_failed_bss(unsigned long ul)
 {
 	static_i += 2;
+	printf("static_i = %d\n", static_i);
 }
 ULPATCH_INFO(ulp_failed_bss, print_hello, "Rong Tao");