diff --git a/tests/ts/kill/name_to_number b/tests/ts/kill/name_to_number
index 86e644513..b6ae4be4d 100755
--- a/tests/ts/kill/name_to_number
+++ b/tests/ts/kill/name_to_number
@@ -38,7 +38,7 @@ for SIG in $($TS_CMD_KILL -L); do
 		EXPECTED=$SIG
 		continue
 	fi
-	if [ -f "$TS_ENABLE_ASAN" ] && [ "x$SIG" = "xSEGV" ]; then
+	if [ "$TS_ENABLE_ASAN" == "yes" ] && [ "x$SIG" = "xSEGV" ]; then
 		continue
 	fi
 	if [ "x$SIG" = "xSTOP" ] || [ "x$SIG" = "xKILL" ]; then
diff --git a/tests/ts/libmount/tabfiles-tags b/tests/ts/libmount/tabfiles-tags
index ff17bccc6..69b06a95a 100755
--- a/tests/ts/libmount/tabfiles-tags
+++ b/tests/ts/libmount/tabfiles-tags
@@ -8,7 +8,7 @@ ts_init "$*"
 
 ts_skip_nonroot
 
-if [ -f "$TS_ENABLE_ASAN" ]; then
+if [ "$TS_ENABLE_ASAN" == "yes" ]; then
 	TS_KNOWN_FAIL="yes"
 fi