diff --git a/docs/c-api/mqtt.h/mg_mqtt_ping.md b/docs/c-api/mqtt.h/mg_mqtt_ping.md
index acaa11ac5bf66ffedc63ba2b2fc6140f022bbcd6..757a825eeef1fa3730fdafd46081b33af69f6fca 100644
--- a/docs/c-api/mqtt.h/mg_mqtt_ping.md
+++ b/docs/c-api/mqtt.h/mg_mqtt_ping.md
@@ -6,5 +6,5 @@ signature: |
   void mg_mqtt_ping(struct mg_connection *nc);
 ---
 
-Send a PINGREQ command. 
+Sends a PINGREQ command.