1 files changed, 3 insertions, 2 deletions
diff --git a/libnetdata/json/json.c b/libnetdata/json/json.c
index e03556b50..d5f62edaf 100644
--- a/libnetdata/json/json.c
+++ b/libnetdata/json/json.c
@@ -102,7 +102,7 @@ int json_callback_print(JSON_ENTRY *e)
 
         case JSON_ARRAY:
             e->callback_function = json_callback_print;
-            sprintf(txt,"ARRAY[%lu]", e->data.items);
+            sprintf(txt,"ARRAY[%lu]", (long unsigned int) e->data.items);
             buffer_strcat(wb, txt);
             break;
 
@@ -553,4 +553,5 @@ int json_test(char *str)
 {
     return json_parse(str, NULL, json_callback_print);
 }
- */
-\ No newline at end of file
+ */
+