diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index d3a5149225b..48fe99f0ae6 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -2816,27 +2816,6 @@ _mesa_RenderbufferStorageMultisampleAdvancedAMD(
 }
 
 
-/**
- * OpenGL ES version of glRenderBufferStorage.
- */
-void GLAPIENTRY
-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
-                           GLsizei width, GLsizei height)
-{
-   switch (internalFormat) {
-   case GL_RGB565:
-      /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
-      /* choose a closest format */
-      internalFormat = GL_RGB5;
-      break;
-   default:
-      break;
-   }
-
-   renderbuffer_storage_target(target, internalFormat, width, height, 0, 0,
-                               "glRenderbufferStorageEXT");
-}
-
 void GLAPIENTRY
 _mesa_NamedRenderbufferStorage(GLuint renderbuffer, GLenum internalformat,
                                GLsizei width, GLsizei height)
diff --git a/src/mesa/main/fbobject.h b/src/mesa/main/fbobject.h
index 2a891514437..04f7f459ce7 100644
--- a/src/mesa/main/fbobject.h
+++ b/src/mesa/main/fbobject.h
@@ -174,10 +174,6 @@ _mesa_RenderbufferStorageMultisampleAdvancedAMD(
       GLenum target, GLsizei samples, GLsizei storageSamples,
       GLenum internalFormat, GLsizei width, GLsizei height);
 
-extern void GLAPIENTRY
-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
-			   GLsizei width, GLsizei height);
-
 extern void GLAPIENTRY
 _mesa_NamedRenderbufferStorage(GLuint renderbuffer, GLenum internalformat,
                                GLsizei width, GLsizei height);