diff --git a/src/wayland-server-core.h b/src/wayland-server-core.h
index 26c527ef..b1baa25f 100644
--- a/src/wayland-server-core.h
+++ b/src/wayland-server-core.h
@@ -550,6 +550,10 @@ void
 wl_resource_queue_event_array(struct wl_resource *resource,
 			      uint32_t opcode, union wl_argument *args);
 
+void
+wl_resource_post_error_vargs(struct wl_resource *resource,
+			     uint32_t code, const char *msg, va_list argp);
+
 void
 wl_resource_post_error(struct wl_resource *resource,
 		       uint32_t code, const char *msg, ...) WL_PRINTF(3, 4);
diff --git a/src/wayland-server.c b/src/wayland-server.c
index c54a6d64..5ea9101b 100644
--- a/src/wayland-server.c
+++ b/src/wayland-server.c
@@ -288,7 +288,16 @@ wl_resource_queue_event(struct wl_resource *resource, uint32_t opcode, ...)
 	wl_resource_queue_event_array(resource, opcode, args);
 }
 
-static void
+/** Post a protocol error
+ *
+ * \param resource The resource object
+ * \param code The error code
+ * \param msg The error message format string
+ * \param argp The format string argument list
+ *
+ * \memberof wl_resource
+ */
+WL_EXPORT void
 wl_resource_post_error_vargs(struct wl_resource *resource,
 			     uint32_t code, const char *msg, va_list argp)
 {
@@ -310,7 +319,6 @@ wl_resource_post_error_vargs(struct wl_resource *resource,
 	wl_resource_post_event(client->display_resource,
 			       WL_DISPLAY_ERROR, resource, code, buffer);
 	client->error = true;
-
 }
 
 /** Post a protocol error