diff --git a/mattermost/hooks/init b/mattermost/hooks/init
index c29d44c..216ceaa 100755
--- a/mattermost/hooks/init
+++ b/mattermost/hooks/init
@@ -19,9 +19,9 @@ dirs=("$SERVICE_CONFIGSTORE/mattermost/"{config,plugins} "$SERVICE_DATASTORE/mat
 for dir in "${dirs[@]}"; do
     mkdir -p "$dir"
     find "$dir" \! -uid 2000 -print0 | while read-0 f; do
-        chown -v 2000 "$f"
+        chown -v 2000 "$f" || exit 1
     done
     find "$dir" \! -gid 2000 -print0 | while read-0 f; do
-        chgrp -v 2000 "$f"
+        chgrp -v 2000 "$f" || exit 1
     done
 done
diff --git a/mongo/hooks/init b/mongo/hooks/init
index 8cc5bb2..d2e6a60 100755
--- a/mongo/hooks/init
+++ b/mongo/hooks/init
@@ -39,8 +39,9 @@ for dir in "${dirs[@]}"; do
 done
 
 mkdir -p "${host_dirs[@]}"
-find "${host_dirs[@]}" \! -user "$uid" \
-     -exec chown -v "$uid" {} + || true
+find "${host_dirs[@]}" \! -user "$uid" -print0 | while read-0 f; do
+    chown -v "$uid" "$f" || exit 1
+done
 
 
 config_hash=$(cat "$CONFIG" | md5_compat) || exit 1
diff --git a/odoo-tecnativa/hooks/init b/odoo-tecnativa/hooks/init
index 8f4c985..e208b4b 100755
--- a/odoo-tecnativa/hooks/init
+++ b/odoo-tecnativa/hooks/init
@@ -21,7 +21,9 @@ odoo_uid=$(get_odoo_uid)
 
 mkdir -p "$LIB"
 ## XXXvlab: this one can fail if files are removed (from sessions dir)
-find "$LIB" \! -user "$odoo_uid" -exec chown -v "$odoo_uid" {} + || true
+find "$LIB" \! -user "$odoo_uid" -print0 | while read-0 f; do
+    chown -v "$odoo_uid" "$f" || exit 1
+done
 
 ## workers management
 workers=$(options-get workers 2>&1) || true
diff --git a/peertube/hooks/init b/peertube/hooks/init
index b883f62..f87180e 100755
--- a/peertube/hooks/init
+++ b/peertube/hooks/init
@@ -80,8 +80,8 @@ for dir in "${dirs[@]}"; do
 done
 
 mkdir -p "${host_dirs[@]}"
-find "${host_dirs[@]}" \! -user "$peertube_uid" \
-     -exec chown -v "$peertube_uid" {} + || true
-
+find "${host_dirs[@]}" \! -user "$peertube_uid" -print0 | while read-0 f; do
+    chown -v "$peertube_uid" "$f" || exit 1
+done
 
 true
\ No newline at end of file
diff --git a/redis/hooks/init b/redis/hooks/init
index c2db0ff..1fff55d 100755
--- a/redis/hooks/init
+++ b/redis/hooks/init
@@ -47,9 +47,9 @@ for dir in "${dirs[@]}"; do
 done
 
 mkdir -p "${host_dirs[@]}"
-find "${host_dirs[@]}" \! -user "$uid" \
-     -exec chown -v "$uid" {} + || true
-
+find "${host_dirs[@]}" \! -user "$uid" -print0 | while read-0 f; do
+    chown -v "$uid" "$f" || exit 1
+done
 
 config_hash=$(cat "$CONFIG" | md5_compat) || exit 1
 init-config-add "
diff --git a/rocketchat/hooks/init b/rocketchat/hooks/init
index 4713f0d..583c406 100755
--- a/rocketchat/hooks/init
+++ b/rocketchat/hooks/init
@@ -21,6 +21,6 @@ for dir in "${dirs[@]}"; do
 done
 
 mkdir -p "${host_dirs[@]}"
-find "${host_dirs[@]}" \! -user "$uid" \
-     -exec chown -v "$uid" {} + || true
-
+find "${host_dirs[@]}" \! -user "$uid" -print0 | while read-0 f; do
+    chown -v "$uid" "$f" || exit 1
+done
\ No newline at end of file
diff --git a/synapse/lib/common b/synapse/lib/common
index 2ee6d02..ae3fb1a 100644
--- a/synapse/lib/common
+++ b/synapse/lib/common
@@ -36,8 +36,12 @@ setup_dirs() {
     gid="${uid_gid[1]}"
     for dir in "${dirs[@]}"; do
         mkdir -p "$dir"
-        find "$dir" \! -uid "$uid" -exec chown -v "$uid" {} \;
-        find "$dir" \! -gid "$gid" -exec chgrp -v "$gid" {} \;
+        find "$dir" \! -uid "$uid" -print0 | while read-0 f; do
+            chown -v "$uid" "$f" || return 1
+        done
+        find "$dir" \! -gid "$gid" -print0 | while read-0 f; do
+            chgrp -v "$gid" "$f" || return 1
+        done
     done
 
     dirs=(