diff --git a/tools/perf/pmu-events/jsmn.c b/tools/perf/pmu-events/jsmn.c
index 8124d2d3ff0c..831dc44c4558 100644
--- a/tools/perf/pmu-events/jsmn.c
+++ b/tools/perf/pmu-events/jsmn.c
@@ -24,6 +24,7 @@
 
 #include <stdlib.h>
 #include "jsmn.h"
+#define JSMN_STRICT
 
 /*
  * Allocates a fresh unused token from the token pool.