1 files changed, 1 insertions, 1 deletions

diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c
index a00ec190821a..42dbf73758f3 100644
--- a/tools/lib/traceevent/plugin_function.c
+++ b/tools/lib/traceevent/plugin_function.c
@@ -130,7 +130,7 @@ static int function_handler(struct trace_seq *s, struct pevent_record *record,
         unsigned long long pfunction;
         const char *func;
         const char *parent;
-        int index;
+        int index = 0;
 
         if (pevent_get_field_val(s, event, "ip", record, &function, 1))
                 return trace_seq_putc(s, '!');