diff --git a/drmhwctwo.cpp b/drmhwctwo.cpp
index b99e122..95c93de 100644
--- a/drmhwctwo.cpp
+++ b/drmhwctwo.cpp
@@ -732,7 +732,7 @@
   supported(__func__);
 
   if (mode != HAL_COLOR_MODE_NATIVE)
-    return HWC2::Error::Unsupported;
+    return HWC2::Error::BadParameter;
 
   color_mode_ = mode;
   return HWC2::Error::None;