diff --git a/src/osgDB/Registry.cpp b/src/osgDB/Registry.cpp
index 231bc48bc..60c7592aa 100644
--- a/src/osgDB/Registry.cpp
+++ b/src/osgDB/Registry.cpp
@@ -220,6 +220,10 @@ Registry::Registry()
     addFileExtensionAlias("dcm",   "dicom");
     addFileExtensionAlias("dic",   "dicom");
 
+    addFileExtensionAlias("gl",   "glsl");
+    addFileExtensionAlias("vert",   "glsl");
+    addFileExtensionAlias("frag",   "glsl");
+
 #if defined(DARWIN_QUICKTIME)
     addFileExtensionAlias("jpg",  "qt");
     addFileExtensionAlias("jpe",  "qt");
diff --git a/src/osgPlugins/glsl/ReaderWriterGLSL.cpp b/src/osgPlugins/glsl/ReaderWriterGLSL.cpp
index cdbb81461..359ae85b7 100644
--- a/src/osgPlugins/glsl/ReaderWriterGLSL.cpp
+++ b/src/osgPlugins/glsl/ReaderWriterGLSL.cpp
@@ -14,14 +14,12 @@ class ReaderWriterGLSL : public osgDB::ReaderWriter
         ReaderWriterGLSL()
         {
             supportsExtension("gl","OpenGL Shader Language format");
+            supportsExtension("frag","OpenGL Shader Language format");
+            supportsExtension("vert","OpenGL Shader Language format");
             supportsExtension("glsl","OpenGL Shader Language format");
         }
     
         virtual const char* className() const { return "GLSL Shader Reader"; }
-        virtual bool acceptsExtension(const std::string& extension) const
-        { 
-            return osgDB::equalCaseInsensitive(extension,"glsl") || osgDB::equalCaseInsensitive(extension,"gl");
-        }
 
         virtual ReadResult readShader(std::istream& fin,const Options* options) const
         {