diff --git a/src/osgDB/Registry.cpp b/src/osgDB/Registry.cpp
index 833abf128..8f07dd3ef 100644
--- a/src/osgDB/Registry.cpp
+++ b/src/osgDB/Registry.cpp
@@ -469,7 +469,7 @@ std::string Registry::createLibraryNameForExtension(const std::string& ext)
 {
 
     ExtensionAliasMap::iterator itr=_extAliasMap.find(ext);
-    if (itr!=_extAliasMap.end()) return createLibraryNameForExtension(itr->second);
+    if (itr!=_extAliasMap.end() && ext != itr->second) return createLibraryNameForExtension(itr->second);
 
 #ifdef OSG_JAVA_BUILD
     static std::string prepend = "java";