diff --git a/common/hw-gfx-gma.adb b/common/hw-gfx-gma.adb
index 0e2c835..4a1264c 100644
--- a/common/hw-gfx-gma.adb
+++ b/common/hw-gfx-gma.adb
@@ -109,7 +109,7 @@
 
       if Success then
          Success := Config_Helpers.Validate_Config
-           (Pipe_Cfg.Framebuffer, Port_Cfg, Pipe);
+           (Pipe_Cfg.Framebuffer, Port_Cfg.Mode, Pipe);
       end if;
 
       if Success then