diff --git a/src/Engine.cc b/src/Engine.cc
index ede1072..ea3517b 100644
--- a/src/Engine.cc
+++ b/src/Engine.cc
@@ -158,6 +158,7 @@ Engine::Engine(const string & path, AV & av)
 
     registerLibraries();
 
+    {
     const char *obj_v_src = (const char *) getFile("shaders/obj.vp", NULL);
     const char *obj_f_src = (const char *) getFile("shaders/obj.fp", NULL);
     const static guAttribBinding obj_bindings[] = {
@@ -175,6 +176,17 @@ Engine::Engine(const string & path, AV & av)
         m_programs[PROG_OBJ] = 0;
         cerr << "Error: Could not obtain 'obj' shader sources" << endl;
     }
+    guUniformLocation uniforms_obj[] = {
+        {&m_uniforms_obj[UNIFORM_OBJ_AMBIENT], "ambient"},
+        {&m_uniforms_obj[UNIFORM_OBJ_DIFFUSE], "diffuse"},
+        {&m_uniforms_obj[UNIFORM_OBJ_SPECULAR], "specular"},
+        {&m_uniforms_obj[UNIFORM_OBJ_SHININESS], "shininess"},
+        {NULL, NULL}
+    };
+    guGetUniformLocations(m_programs[PROG_OBJ], uniforms_obj);
+    }
+
+    {
     const char *obj_tex_v_src =
         (const char *) getFile("shaders/obj_tex.vp", NULL);
     const char *obj_tex_f_src =
@@ -195,6 +207,14 @@ Engine::Engine(const string & path, AV & av)
         m_programs[PROG_OBJ_TEX] = 0;
         cerr << "Error: Could not obtain 'obj_tex' shader sources" << endl;
     }
+    guUniformLocation uniforms_obj_tex[] = {
+        {&m_uniforms_obj_tex[UNIFORM_OBJ_TEX_AMBIENT], "ambient"},
+        {&m_uniforms_obj_tex[UNIFORM_OBJ_TEX_SPECULAR], "specular"},
+        {&m_uniforms_obj_tex[UNIFORM_OBJ_TEX_SHININESS], "shininess"},
+        {NULL, NULL}
+    };
+    guGetUniformLocations(m_programs[PROG_OBJ_TEX], uniforms_obj_tex);
+    }
 }
 
 Engine::~Engine()
diff --git a/src/Engine.h b/src/Engine.h
index 7776f2f..952d8f0 100644
--- a/src/Engine.h
+++ b/src/Engine.h
@@ -372,8 +372,6 @@ class Engine
         enum { PROG_OBJ, PROG_OBJ_TEX, PROG_COUNT };
         GLuint          m_programs[PROG_COUNT];
         enum {
-            UNIFORM_OBJ_PROJECTION,
-            UNIFORM_OBJ_MODELVIEW,
             UNIFORM_OBJ_AMBIENT,
             UNIFORM_OBJ_DIFFUSE,
             UNIFORM_OBJ_SPECULAR,
@@ -387,8 +385,6 @@ class Engine
         };
         GLint           m_uniforms_obj[UNIFORM_OBJ_COUNT];
         enum {
-            UNIFORM_OBJ_TEX_PROJECTION,
-            UNIFORM_OBJ_TEX_MODELVIEW,
             UNIFORM_OBJ_TEX_AMBIENT,
             UNIFORM_OBJ_TEX_SPECULAR,
             UNIFORM_OBJ_TEX_SHININESS,