diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index eae879376283328660a026643052476eb28a7b43..f8b6ae557d8bd7b7750a8fccf53ae338059ef91e 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -646,7 +646,7 @@ static void compute_cycles_diff(struct hist_entry *he,
 			if (i >= he->block_info->num || i >= NUM_SPARKS)
 				break;
 
-			val = labs(pair->block_info->cycles_spark[i] -
+			val = llabs(pair->block_info->cycles_spark[i] -
 				     he->block_info->cycles_spark[i]);
 
 			update_spark_value(pair->diff.svals, NUM_SPARKS,