diff --git a/src/github.com/matrix-org/dendrite/common/config/appservice.go b/src/github.com/matrix-org/dendrite/common/config/appservice.go
index 178788e3c..e9e0158d5 100644
--- a/src/github.com/matrix-org/dendrite/common/config/appservice.go
+++ b/src/github.com/matrix-org/dendrite/common/config/appservice.go
@@ -188,6 +188,11 @@ func checkErrors(config *Dendrite) (err error) {
 			}
 		}
 
+		// Check if the url has trailing /'s. If so, remove them
+		for strings.HasSuffix(appservice.URL, "/") {
+			appservice.URL = strings.TrimSuffix(appservice.URL, "/")
+		}
+
 		// Check if we've already seen this ID. No two application services
 		// can have the same ID or token.
 		if idMap[appservice.ID] {