diff --git a/cogl/cogl/cogl.c b/cogl/cogl/cogl.c
index 00796e38b..279d5b689 100644
--- a/cogl/cogl/cogl.c
+++ b/cogl/cogl/cogl.c
@@ -77,13 +77,6 @@ _cogl_check_extension (const char *name, char * const *ext)
   return FALSE;
 }
 
-/* XXX: This has been deprecated as public API */
-gboolean
-cogl_check_extension (const char *name, const char *ext)
-{
-  return cogl_clutter_check_extension (name, ext);
-}
-
 /* XXX: it's expected that we'll deprecated this with
  * cogl_framebuffer_clear at some point. */
 void
diff --git a/cogl/cogl/cogl1-context.h b/cogl/cogl/cogl1-context.h
index 0d873fe76..fc660b1d9 100644
--- a/cogl/cogl/cogl1-context.h
+++ b/cogl/cogl/cogl1-context.h
@@ -79,27 +79,6 @@ cogl_get_option_group (void);
 GCallback
 cogl_get_proc_address (const char *name);
 
-/**
- * cogl_check_extension:
- * @name: extension to check for
- * @ext: list of extensions
- *
- * Check whether @name occurs in list of extensions in @ext.
- *
- * Return value: %TRUE if the extension occurs in the list, %FALSE otherwise.
- *
- * Deprecated: 1.2: OpenGL is an implementation detail for Cogl and so it's
- *   not appropriate to expose OpenGL extensions through the Cogl API. This
- *   function can be replaced by the following equivalent code:
- * |[
- *   gboolean retval = (strstr (ext, name) != NULL) ? TRUE : FALSE;
- * ]|
- */
-COGL_DEPRECATED
-gboolean
-cogl_check_extension (const char *name,
-                      const char *ext);
-
 /**
  * cogl_get_bitmasks:
  * @red: (out): Return location for the number of red bits or %NULL
diff --git a/cogl/cogl/deprecated/cogl-clutter.c b/cogl/cogl/deprecated/cogl-clutter.c
index 63899355e..a2528c8be 100644
--- a/cogl/cogl/deprecated/cogl-clutter.c
+++ b/cogl/cogl/deprecated/cogl-clutter.c
@@ -46,31 +46,6 @@
 #include "winsys/cogl-winsys-private.h"
 #include "deprecated/cogl-clutter.h"
 
-gboolean
-cogl_clutter_check_extension (const char *name, const char *ext)
-{
-  char *end;
-  int name_len, n;
-
-  if (name == NULL || ext == NULL)
-    return FALSE;
-
-  end = (char*)(ext + strlen(ext));
-
-  name_len = strlen(name);
-
-  while (ext < end)
-    {
-      n = strcspn(ext, " ");
-
-      if ((name_len == n) && (!strncmp(name, ext, n)))
-	return TRUE;
-      ext += (n + 1);
-    }
-
-  return FALSE;
-}
-
 gboolean
 cogl_clutter_winsys_has_feature (CoglWinsysFeature feature)
 {
diff --git a/cogl/cogl/deprecated/cogl-clutter.h b/cogl/cogl/deprecated/cogl-clutter.h
index 82f4cce82..2f37b4486 100644
--- a/cogl/cogl/deprecated/cogl-clutter.h
+++ b/cogl/cogl/deprecated/cogl-clutter.h
@@ -35,11 +35,6 @@
 
 G_BEGIN_DECLS
 
-#define cogl_clutter_check_extension cogl_clutter_check_extension_CLUTTER
-COGL_DEPRECATED
-gboolean
-cogl_clutter_check_extension (const char *name, const char *ext);
-
 #define cogl_clutter_winsys_has_feature cogl_clutter_winsys_has_feature_CLUTTER
 COGL_DEPRECATED_FOR (cogl_has_feature)
 gboolean