diff --git a/docs/c-api/mqtt.h/mg_mqtt_pubrel.md b/docs/c-api/mqtt.h/mg_mqtt_pubrel.md
index 899e8b9d..18a6c581 100644
--- a/docs/c-api/mqtt.h/mg_mqtt_pubrel.md
+++ b/docs/c-api/mqtt.h/mg_mqtt_pubrel.md
@@ -6,5 +6,5 @@ signature: |
   void mg_mqtt_pubrel(struct mg_connection *nc, uint16_t message_id);
 ---
 
-Send a PUBREL command with a given `message_id`. 
+Sends a PUBREL command with a given `message_id`.