diff --git a/project/common/ExternalInterface.cpp b/project/common/ExternalInterface.cpp
index 10a50dd..80a7e3b 100644
--- a/project/common/ExternalInterface.cpp
+++ b/project/common/ExternalInterface.cpp
@@ -1019,8 +1019,13 @@ extern "C" {
 	}
 }
 
-extern "C" int openfl_webm_register_prims () {
+extern "C" int extension_webm_register_prims () {
 	
 	return 0;
 	
 }
+
+// DEPRECATED: Use extension_webm_register_prims instead.
+extern "C" int openfl_webm_register_prims () {
+	return extension_webm_register_prims();
+}