diff --git a/src/osgText/Font.cpp b/src/osgText/Font.cpp
index edd5e9831..3e9acb425 100644
--- a/src/osgText/Font.cpp
+++ b/src/osgText/Font.cpp
@@ -602,13 +602,22 @@ void Font::GlyphTexture::apply(osg::State& state) const
     {
         s_renderer = glGetString(GL_RENDERER);
         osg::notify(osg::INFO)<<"glGetString(GL_RENDERER)=="<<s_renderer<<std::endl;
-        if (strstr((const char*)s_renderer,"IMPACT")!=0)
+        if (s_renderer && strstr((const char*)s_renderer,"IMPACT")!=0)
         {
             // we're running on an Octane, so need to work around its
             // subloading bugs by loading all at once.
             s_subloadAllGlyphsTogether = true;
         }
         
+        if (s_renderer && 
+            (strstr((const char*)s_renderer,"Radeon")!=0) || 
+            (strstr((const char*)s_renderer,"RADEON")!=0))
+        {
+            // we're running on an ATI, so need to work around its
+            // subloading bugs by loading all at once.
+            s_subloadAllGlyphsTogether = true;
+        }
+
         const char* str = getenv("OSG_TEXT_INCREMENTAL_SUBLOADING");
         if (str && (strcmp(str,"OFF")==0 || strcmp(str,"Off")==0 || strcmp(str,"Off")==0))
         {