diff --git a/cogl/cogl/cogl-framebuffer.h b/cogl/cogl/cogl-framebuffer.h
index 688c35f76..fab99ef2c 100644
--- a/cogl/cogl/cogl-framebuffer.h
+++ b/cogl/cogl/cogl-framebuffer.h
@@ -1559,7 +1559,7 @@ cogl_blit_framebuffer (CoglFramebuffer *framebuffer,
  *
  * Unlike cogl_framebuffer_finish(), this does not block the CPU.
  */
-void
+COGL_EXPORT void
 cogl_framebuffer_flush (CoglFramebuffer *framebuffer);
 
 G_END_DECLS