diff --git a/lib/rtsp.c b/lib/rtsp.c
index f2bf647166..35dc049778 100644
--- a/lib/rtsp.c
+++ b/lib/rtsp.c
@@ -101,9 +101,9 @@ static CURLcode rtsp_rtp_write_resp_hd(struct Curl_easy *data,
 
 static CURLcode rtsp_setup_connection(struct Curl_easy *data,
                                       struct connectdata *conn);
-static unsigned int rtsp_conncheck(struct Curl_easy *data,
-                                   struct connectdata *check,
-                                   unsigned int checks_to_perform);
+static uint32_t rtsp_conncheck(struct Curl_easy *data,
+                               struct connectdata *check,
+                               uint32_t checks_to_perform);
 
 /* this returns the socket to wait for in the DO and DOING state for the multi
    interface and then we are always _sending_ a request and thus we wait for
@@ -191,9 +191,9 @@ static CURLcode rtsp_setup_connection(struct Curl_easy *data,
 /*
  * Function to check on various aspects of a connection.
  */
-static unsigned int rtsp_conncheck(struct Curl_easy *data,
-                                   struct connectdata *conn,
-                                   unsigned int checks_to_perform)
+static uint32_t rtsp_conncheck(struct Curl_easy *data,
+                               struct connectdata *conn,
+                               uint32_t checks_to_perform)
 {
   unsigned int ret_val = CONNRESULT_NONE;
   (void)data;