diff --git a/hack/make/build-deb b/hack/make/build-deb
index 102d5351d2..de49954864 100644
--- a/hack/make/build-deb
+++ b/hack/make/build-deb
@@ -41,7 +41,10 @@ set -e
 	builderDir="contrib/builder/deb/${PACKAGE_ARCH}"
 	pkgs=( $(find "${builderDir}/"*/ -type d) )
 	if [ ! -z "$DOCKER_BUILD_PKGS" ]; then
-		pkgs=( $(echo ${DOCKER_BUILD_PKGS[@]/#/$builderDir\/}) )
+		pkgs=()
+		for p in $DOCKER_BUILD_PKGS; do
+			pkgs+=( "$builderDir/$p" )
+		done
 	fi
 	for dir in "${pkgs[@]}"; do
 		[ -d "$dir" ] || { echo >&2 "skipping nonexistent $dir"; continue; }
diff --git a/hack/make/build-rpm b/hack/make/build-rpm
index 79fe5eee7d..b794ebc24b 100644
--- a/hack/make/build-rpm
+++ b/hack/make/build-rpm
@@ -71,7 +71,10 @@ set -e
 	builderDir="contrib/builder/rpm/${PACKAGE_ARCH}"
 	pkgs=( $(find "${builderDir}/"*/ -type d) )
 	if [ ! -z "$DOCKER_BUILD_PKGS" ]; then
-		pkgs=( $(echo ${DOCKER_BUILD_PKGS[@]/#/$builderDir\/}) )
+		pkgs=()
+		for p in $DOCKER_BUILD_PKGS; do
+			pkgs+=( "$builderDir/$p" )
+		done
 	fi
 	for dir in "${pkgs[@]}"; do
 		[ -d "$dir" ] || { echo >&2 "skipping nonexistent $dir"; continue; }
diff --git a/hack/make/test-deb-install b/hack/make/test-deb-install
index c4482cd428..aec5847600 100755
--- a/hack/make/test-deb-install
+++ b/hack/make/test-deb-install
@@ -16,7 +16,10 @@ test_deb_install(){
 	builderDir="contrib/builder/deb/${PACKAGE_ARCH}"
 	pkgs=( $(find "${builderDir}/"*/ -type d) )
 	if [ ! -z "$DOCKER_BUILD_PKGS" ]; then
-		pkgs=( $(echo ${DOCKER_BUILD_PKGS[@]/#/$builderDir\/}) )
+		pkgs=()
+		for p in $DOCKER_BUILD_PKGS; do
+			pkgs+=( "$builderDir/$p" )
+		done
 	fi
 	for dir in "${pkgs[@]}"; do
 		[ -d "$dir" ] || { echo >&2 "skipping nonexistent $dir"; continue; }