diff --git a/fsfe-preview.sh b/fsfe-preview.sh
index 59c28fb..f2e340b 100755
--- a/fsfe-preview.sh
+++ b/fsfe-preview.sh
@@ -80,7 +80,13 @@ if [ "$1" = "--copy" ]; then
     SRC_full=$(realpath $2)
     DST_full=$(echo $SRC_full | sed -E "s|$LOC_trunk|$LOC_out|")
     echo "[INFO] Copying $SRC_full to $DST_full..."
-    cp -R $SRC_full $DST_full
+    if [ -d "$SRC_full" ] && [ -e "$DST_full" ]; then
+      rm -rf "$DST_full"
+      cp -R $SRC_full $DST_full
+    else
+      cp -R $SRC_full $DST_full
+    fi
+    
     shift
   done
   echo "[SUCCESS] Copying finished. Files should be visible via the local webserver now."
@@ -96,6 +102,13 @@ if [ ! $(echo $SRC_full | grep "$LOC_trunk") ]; then
   exit 1
 fi
 
+# CHECK whether the source file is a directory (only --copy allowed)
+if [ -d "$SRC_full" ]; then
+  echo "[ERROR] The given file \"$SRC_full\" is a directory. Those can only be copied by using --copy as a parameter."
+  echo "NOTE: Using --copy won't build potential .xhtml files inside a directory. If you have this case, please first copy an empty directory and then build the .xhtml files inside them."
+  exit 1
+fi
+
 # TEST if a DEV SVN directory is used. If yes, copy clean file to this Dir
 if [ "$LOC_trunk_dev" != "" ]; then
   SRC_full_dev=$(echo $SRC_full | sed -E "s|$LOC_trunk|$LOC_trunk_dev|")