1 files changed, 3 insertions, 3 deletions

diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c
index c08ce594cabe..774c3e4c1d9f 100644
--- a/tools/lib/traceevent/parse-filter.c
+++ b/tools/lib/traceevent/parse-filter.c
@@ -648,7 +648,7 @@ rotate_op_right(struct filter_arg *a, struct filter_arg *b)
         return arg;
 }
 
-static int add_left(struct filter_arg *op, struct filter_arg *arg)
+static enum pevent_errno add_left(struct filter_arg *op, struct filter_arg *arg)
 {
         switch (op->type) {
         case FILTER_ARG_EXP:
@@ -667,11 +667,11 @@ static int add_left(struct filter_arg *op, struct filter_arg *arg)
                 /* left arg of compares must be a field */
                 if (arg->type != FILTER_ARG_FIELD &&
                     arg->type != FILTER_ARG_BOOLEAN)
-                        return -1;
+                        return PEVENT_ERRNO__INVALID_ARG_TYPE;
                 op->num.left = arg;
                 break;
         default:
-                return -1;
+                return PEVENT_ERRNO__INVALID_ARG_TYPE;
         }
         return 0;
 }