diff --git a/tools/sim/bridge/metadrive/metadrive_common.py b/tools/sim/bridge/metadrive/metadrive_common.py
index 42a7eb60dd..079d933d1a 100644
--- a/tools/sim/bridge/metadrive/metadrive_common.py
+++ b/tools/sim/bridge/metadrive/metadrive_common.py
@@ -13,9 +13,9 @@ class CopyRamRGBCamera(RGBCamera):
 
   def get_rgb_array_cpu(self):
     origin_img = self.cpu_texture
-    img = np.frombuffer(origin_img.getRamImage().getData(), dtype=np.uint8)
-    img = img.reshape((origin_img.getYSize(), origin_img.getXSize(), -1))
-    img = img[:,:,:3] # RGBA to RGB
+    img = np.frombuffer(origin_img.getRamImageAs("RGBA").getData(), dtype=np.uint8)
+    img = img.reshape((origin_img.getYSize(), origin_img.getXSize(), 4))
+    img = img[:, :, :3]
     # img = np.swapaxes(img, 1, 0)
     img = img[::-1] # Flip on vertical axis
     return img