diff --git a/libipt/test/src/ptunit-msec_cache.c b/libipt/test/src/ptunit-msec_cache.c
index 68d9daf..cfb059b 100644
--- a/libipt/test/src/ptunit-msec_cache.c
+++ b/libipt/test/src/ptunit-msec_cache.c
@@ -296,7 +296,7 @@ static struct ptunit_result read(struct test_fixture *tfix)
 static struct ptunit_result fill_nomap(struct test_fixture *tfix)
 {
 	const struct pt_mapped_section *msec;
-	struct pt_asid asid;
+	struct pt_asid asid = { 0 };
 	struct pt_section *section;
 	int status;
 
@@ -320,7 +320,7 @@ static struct ptunit_result fill(struct test_fixture *tfix)
 {
 	const struct pt_mapped_section *msec;
 	struct pt_section *section;
-	struct pt_asid asid;
+	struct pt_asid asid = { 0 };
 	int status;
 
 	status = pt_msec_cache_fill(&tfix->mcache, &msec, &tfix->image, &asid,