diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index d22030828c217572a0e250743e4061df1a7b36a5..c324bdf8baba1bd4bac10fd752672c065c8fb781 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -884,6 +884,11 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
 	return err;
 }
 
+static bool dso__build_id_equal(const struct dso *self, u8 *build_id)
+{
+	return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0;
+}
+
 bool dsos__read_build_ids(void)
 {
 	bool have_build_id = false;
@@ -1099,8 +1104,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
 						    sizeof(build_id)) < 0)
 				goto more;
 compare_build_id:
-			if (memcmp(build_id, self->build_id,
-				   sizeof(self->build_id)) != 0)
+			if (!dso__build_id_equal(self, build_id))
 				goto more;
 		}