diff --git a/src/image_mad/remotes/fs/fsrc b/src/image_mad/remotes/fs/fsrc
index 423f27e26b..0f49049d1f 100644
--- a/src/image_mad/remotes/fs/fsrc
+++ b/src/image_mad/remotes/fs/fsrc
@@ -41,14 +41,19 @@ echo "$IMAGE_REPOSITORY_PATH/`echo $CANONICAL_MD5 | cut -d ' ' -f1`"
 }
 
 function fs_du {
+    SIZE=""
 
-SIZE=`$DU -m $1 2>/dev/null`
+    QEMU_IMG=`command -v qemu-img`
 
-if [ $? -ne 0 ]; then
-    SIZE=0
-else
-    SIZE=`echo $SIZE | cut -f1 -d' '`
-fi
+    if [ "$?" = "0" ]; then
+        SIZE=$($QEMU_IMG info $1|awk '/^virtual size:/{print substr($4,2)}')
+    fi
 
-echo "$SIZE"
+    if [ -z "$SIZE" ]; then
+        SIZE=$(stat -c %s $1)
+    fi
+
+    SIZE=$(($SIZE/1048576))
+
+    echo "$SIZE"
 }