diff --git a/Makefile b/Makefile
index ac43c97f..216dd488 100644
--- a/Makefile
+++ b/Makefile
@@ -26,21 +26,22 @@ deb:
 rpm:
 	./build_packages.py --rpm
 
-install:
-	install -d $(DESTDIR)$(FIRMWAREDIR)
-	./copy-firmware.sh $(COPYOPTS) $(DESTDIR)$(FIRMWAREDIR)
+install: install-nodedup
+	./dedup-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
 
 install-nodedup:
 	install -d $(DESTDIR)$(FIRMWAREDIR)
-	./copy-firmware.sh --ignore-duplicates $(DESTDIR)$(FIRMWAREDIR)
+	./copy-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
 
 install-xz:
 	install -d $(DESTDIR)$(FIRMWAREDIR)
 	./copy-firmware.sh --xz $(DESTDIR)$(FIRMWAREDIR)
+	./dedup-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
 
 install-zst:
 	install -d $(DESTDIR)$(FIRMWAREDIR)
 	./copy-firmware.sh --zstd $(DESTDIR)$(FIRMWAREDIR)
+	./dedup-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
 
 clean:
 	rm -rf release dist
diff --git a/check_whence.py b/check_whence.py
index afe97a76..09dbdd54 100755
--- a/check_whence.py
+++ b/check_whence.py
@@ -91,6 +91,7 @@ def main():
             "contrib/templates/debian.copyright",
             "contrib/templates/rpm.spec",
             "copy-firmware.sh",
+            "dedup-firmware.sh",
         ]
     )
     known_prefixes = set(name for name in whence_list if name.endswith("/"))
diff --git a/copy-firmware.sh b/copy-firmware.sh
index 6c557f23..344f478d 100755
--- a/copy-firmware.sh
+++ b/copy-firmware.sh
@@ -9,7 +9,6 @@ prune=no
 # shellcheck disable=SC2209
 compress=cat
 compext=
-skip_dedup=0
 
 while test $# -gt 0; do
     case $1 in
@@ -45,11 +44,6 @@ while test $# -gt 0; do
             shift
             ;;
 
-        --ignore-duplicates)
-            skip_dedup=1
-            shift
-            ;;
-
         -*)
             if test "$compress" = "cat"; then
                 echo "ERROR: unknown command-line option: $1"
@@ -75,13 +69,6 @@ if [ -z "$destdir" ]; then
 	exit 1
 fi
 
-if ! command -v rdfind >/dev/null; then
-	if [ "$skip_dedup" != 1 ]; then
-    		echo "ERROR: rdfind is not installed.  Pass --ignore-duplicates to skip deduplication"
-		exit 1
-	fi
-fi
-
 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
 grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do
     test -f "$f" || continue
@@ -95,16 +82,6 @@ grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g'
     fi
 done
 
-if [ "$skip_dedup" != 1 ] ; then
-	$verbose "Finding duplicate files"
-	rdfind -makesymlinks true -makeresultsfile false "$destdir" >/dev/null
-	find "$destdir" -type l | while read -r l; do
-		target="$(realpath "$l")"
-		$verbose "Correcting path for $l"
-		ln -fs "$(realpath --relative-to="$(dirname "$(realpath -s "$l")")" "$target")" "$l"
-	done
-fi
-
 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
 grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do
     if test -L "$f$compext"; then
diff --git a/dedup-firmware.sh b/dedup-firmware.sh
new file mode 100755
index 00000000..2bbd637f
--- /dev/null
+++ b/dedup-firmware.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Deduplicate files in a given destdir
+#
+
+err() {
+    echo "ERROR: $*"
+    exit 1
+}
+
+verbose=:
+destdir=
+while test $# -gt 0; do
+    case $1 in
+        -v | --verbose)
+            # shellcheck disable=SC2209
+            verbose=echo
+            ;;
+        *)
+            if test -n "$destdir"; then
+                err "unknown command-line options: $*"
+            fi
+
+            destdir="$1"
+            shift
+            ;;
+    esac
+done
+
+if test -z "$destdir"; then
+    err "destination directory was not specified."
+fi
+
+if ! test -d "$destdir"; then
+    err "provided directory does not exit."
+fi
+
+if ! command -v rdfind >/dev/null; then
+    err "rdfind is not installed."
+fi
+
+$verbose "Finding duplicate files"
+rdfind -makesymlinks true -makeresultsfile true "$destdir" >/dev/null
+
+grep DUPTYPE_WITHIN_SAME_TREE results.txt | grep -o "$destdir.*" | while read -r l; do
+    target="$(realpath "$l")"
+    $verbose "Correcting path for $l"
+    ln --force --symbolic --relative "$target" "$l"
+done
+
+rm results.txt