diff -ur collada2gltf.org/shaders/commonProfileShaders.cpp collada2gltf/shaders/commonProfileShaders.cpp
--- collada2gltf.org/shaders/commonProfileShaders.cpp	2014-08-17 08:57:52.187210533 +0200
+++ collada2gltf/shaders/commonProfileShaders.cpp	2014-08-17 08:59:48.427215491 +0200
@@ -367,7 +367,9 @@
     public:
         
         GLSLShader(shared_ptr <GLTFProfile> profile) {
-            this->_declarations = "precision highp float;\n";;
+            this->_declarations = "#ifdef GL_ES_VERSION_2_0\n";
+            this->_declarations += "precision highp float;\n";
+            this->_declarations += "#endif\n";
             this->_body = "void main(void) {\n";
             this->_profile = profile;
         }