diff --git a/geo.c b/geo.c
index 227a0da..24a8dbe 100644
--- a/geo.c
+++ b/geo.c
@@ -345,7 +345,7 @@ JsonNode *revgeo(struct udata *ud, double lat, double lon, UT_string *addr, UT_s
 	curl_easy_setopt(curl, CURLOPT_USERAGENT, "OwnTracks-Recorder/1.0");
 	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
 	curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
-	curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, GEOCODE_TIMEOUT);
+	curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, (long)GEOCODE_TIMEOUT);
 
 	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writemem);
 	curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)cbuf);