diff --git a/libcopybit/copybit_c2d.cpp b/libcopybit/copybit_c2d.cpp
index cf3df66..dca60ad 100644
--- a/libcopybit/copybit_c2d.cpp
+++ b/libcopybit/copybit_c2d.cpp
@@ -141,7 +141,7 @@ struct copybit_module_t HAL_MODULE_INFO_SYM = {
 static int get_format(int format) {
     switch (format) {
     case HAL_PIXEL_FORMAT_RGB_565:        return C2D_COLOR_FORMAT_565_RGB;
-    case HAL_PIXEL_FORMAT_RGBX_8888:      return C2D_COLOR_FORMAT_8888_ARGB | C2D_FORMAT_SWAP_RB;
+    case HAL_PIXEL_FORMAT_RGBX_8888:      return C2D_COLOR_FORMAT_8888_ARGB | C2D_FORMAT_SWAP_RB | C2D_FORMAT_DISABLE_ALPHA;
     case HAL_PIXEL_FORMAT_RGBA_8888:      return C2D_COLOR_FORMAT_8888_ARGB | C2D_FORMAT_SWAP_RB;
     case HAL_PIXEL_FORMAT_BGRA_8888:      return C2D_COLOR_FORMAT_8888_ARGB;
     case HAL_PIXEL_FORMAT_RGBA_5551:      return C2D_COLOR_FORMAT_5551_RGBA;