diff --git a/include/osg/GLDefines b/include/osg/GLDefines
index 094211129..02e0bd719 100644
--- a/include/osg/GLDefines
+++ b/include/osg/GLDefines
@@ -32,7 +32,7 @@
     (defined(GL_VERSION_ES_CM_1_1) && GL_VERSION_ES_CM_1_1 > 0)
 
     #define OPENGLES_1_1_FOUND 1
-
+    typedef GLfloat GLdouble;
 #endif
 
 #ifndef GL_SAMPLER_2D_ARRAY_EXT