diff --git a/.gitmodules b/.gitmodules
index 2adf4a76a8..c09da3b308 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "server-ee"]
 	path = server-ee
-	url = https://code.onedev.io/onedev/server-ee
+	url = https://code.onedev.io/onedev/server-ee.git
diff --git a/server-core/src/main/java/io/onedev/server/web/DefaultUrlService.java b/server-core/src/main/java/io/onedev/server/web/DefaultUrlService.java
index 3f11ed8eab..a67d5eff4d 100644
--- a/server-core/src/main/java/io/onedev/server/web/DefaultUrlService.java
+++ b/server-core/src/main/java/io/onedev/server/web/DefaultUrlService.java
@@ -53,9 +53,9 @@ public class DefaultUrlService implements UrlService {
 	@Override
 	public String cloneUrlFor(Project project, boolean ssh) {
 		if (ssh)
-			return settingService.getSystemSetting().getEffectiveSshRootUrl() + "/" + project.getPath();
+			return settingService.getSystemSetting().getEffectiveSshRootUrl() + "/" + project.getPath() + ".git";
 		else
-			return settingService.getSystemSetting().getServerUrl() + "/" + project.getPath();
+			return settingService.getSystemSetting().getServerUrl() + "/" + project.getPath() + ".git";
 	}
 	
 	@Override