diff --git a/mpeg4ip/common/video/iso-mpeg4/src/sys_decoder_vopsedec.cpp b/mpeg4ip/common/video/iso-mpeg4/src/sys_decoder_vopsedec.cpp
index 62825de..c894877 100644
--- a/mpeg4ip/common/video/iso-mpeg4/src/sys_decoder_vopsedec.cpp
+++ b/mpeg4ip/common/video/iso-mpeg4/src/sys_decoder_vopsedec.cpp
@@ -2813,7 +2813,11 @@ #else
        else
                write420_jnt_withMask(pfYUV, currY, currU, currV, currBY, currBUV, width, height);
 //~OBSSFIX_MODE3
-    fwrite(currBY, sizeof (PixelC), width*height, pfSeg);
+    result = fwrite(currBY, sizeof (PixelC), width*height, pfSeg);
+    if (result != width*height) {
+        perror("fwrite failed!");
+        exit(1);
+    }
 #endif

     delete currY;