diff --git a/examples/cwebp.c b/examples/cwebp.c
index 4a0bd20b..0e4f4e5d 100644
--- a/examples/cwebp.c
+++ b/examples/cwebp.c
@@ -1045,8 +1045,22 @@ int main(int argc, const char *argv[]) {
   if (!quiet && !short_output && print_distortion >= 0) {  // print distortion
     static const char* distortion_names[] = { "PSNR", "SSIM", "LSIM" };
     float values[5];
-    WebPPictureDistortion(&picture, &original_picture,
-                          print_distortion, values);
+    // Comparison is performed in YUVA colorspace.
+    if (original_picture.use_argb &&
+        !WebPPictureARGBToYUVA(&original_picture, WEBP_YUV420A)) {
+      fprintf(stderr, "Error while converting original picture to YUVA.\n");
+      goto Error;
+    }
+    if (picture.use_argb &&
+        !WebPPictureARGBToYUVA(&picture, WEBP_YUV420A)) {
+      fprintf(stderr, "Error while converting compressed picture to YUVA.\n");
+      goto Error;
+    }
+    if (!WebPPictureDistortion(&picture, &original_picture,
+                               print_distortion, values)) {
+      fprintf(stderr, "Error while computing the distortion.\n");
+      goto Error;
+    }
     fprintf(stderr, "%s: Y:%.2f U:%.2f V:%.2f A:%.2f  Total:%.2f\n",
             distortion_names[print_distortion],
             values[0], values[1], values[2], values[3], values[4]);