diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 0ffae315ca08e..541988cf6e191 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -107,9 +107,15 @@ static struct annotated_source *annotated_source__new(void)
 
 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
 {
+	struct hashmap_entry *cur;
+	size_t bkt;
+
 	if (src == NULL)
 		return;
 
+	hashmap__for_each_entry(src->samples, cur, bkt)
+		zfree(&cur->pvalue);
+
 	hashmap__free(src->samples);
 	zfree(&src->histograms);
 	free(src);