diff --git a/optimize.sh b/optimize.sh
index 0ae7629..ecd9aba 100755
--- a/optimize.sh
+++ b/optimize.sh
@@ -213,9 +213,9 @@ if [ "$PNG_OPTIMIZATION" = "y" ]; then
     echo -ne '       png optimization                      [..]\r'
     cd "$IMG_PATH" || (rm "/tmp/$lock" && exit 1)
     if [ -n "$FIND_ARGS" ]; then
-        find . -type f -iname '*.png' -cmin "$FIND_ARGS" -print0 | xargs -r -0 optipng "$PNG_ARGS" -o5 --strip-none
+        find . -type f -iname '*.png' -cmin "$FIND_ARGS" -print0 | xargs -r -0 optipng "$PNG_ARGS" -o5 
     else
-        find . -type f -iname '*.png' -print0 | xargs -r -0 optipng "$PNG_ARGS" -o5 --strip-none
+        find . -type f -iname '*.png' -print0 | xargs -r -0 optipng "$PNG_ARGS" -o5
     fi
     echo -ne "       png optimization                      [${CGREEN}OK${CEND}]\\r"
     echo -ne '\n'