diff --git a/install.sh b/install.sh
index e7cac13..2cceef6 100644
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-### version: 1.5.6
+### version: 1.5.7
 
 # ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.#
 #    Nightscout Mikr.us setup script    #
@@ -34,8 +34,8 @@ MONGO_DB_DIR=/srv/nightscout/data/mongodb
 TOOL_FILE=/srv/nightscout/tools/nightscout-tool
 TOOL_LINK=/usr/bin/nightscout-tool
 UPDATES_DIR=/srv/nightscout/updates
-SCRIPT_VERSION="1.5.6"         #auto-update
-SCRIPT_BUILD_TIME="2023.09.19" #auto-update
+SCRIPT_VERSION="1.5.7"         #auto-update
+SCRIPT_BUILD_TIME="2023.09.29" #auto-update
 
 #=======================================
 # SETUP
@@ -905,7 +905,7 @@ domain_setup() {
 
 			if [[ "$SUBDOMAIN" =~ ^[a-z][a-zA-Z0-9_]{3,11}$ ]]; then
 
-				if printf "%s\n%s" "-$SUBDOMAIN" "$SUBDOMAIN" | grep -wf "$PROFANITY_DB_FILE" >>$LOGTO 2>&1; then
+				if printf "%s\n%s" "-$SUBDOMAIN" "$SUBDOMAIN" | grep -wfx "$PROFANITY_DB_FILE" >>$LOGTO 2>&1; then
 					okdlg "$uni_excl Nieprawidłowy początek subdomeny $uni_excl" \
 						"Podana wartość:\n$SUBDOMAIN\n\njest zajęta, zarezerwowana lub niedopuszczalna.\n\nWymyśl coś innego"
 					SUBDOMAIN=''
diff --git a/package.json b/package.json
index 1d1ebb5..21e6402 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dlvoy/ns-installer-mikrus",
-  "version": "1.5.6",
+  "version": "1.5.7",
   "description": "Nightscout installer for mikr.us VPS",
   "main": "index.js",
   "scripts": {
diff --git a/src/lib.sh b/src/lib.sh
index 5deae23..6daece3 100644
--- a/src/lib.sh
+++ b/src/lib.sh
@@ -18,7 +18,7 @@ MONGO_DB_DIR=/srv/nightscout/data/mongodb
 TOOL_FILE=/srv/nightscout/tools/nightscout-tool
 TOOL_LINK=/usr/bin/nightscout-tool
 UPDATES_DIR=/srv/nightscout/updates
-SCRIPT_VERSION="1.5.6"         #auto-update
+SCRIPT_VERSION="1.5.7"         #auto-update
 SCRIPT_BUILD_TIME="2023.09.15" #auto-update
 
 #=======================================
@@ -889,7 +889,7 @@ domain_setup() {
 
 			if [[ "$SUBDOMAIN" =~ ^[a-z][a-zA-Z0-9_]{3,11}$ ]]; then
 
-				if printf "%s\n%s" "-$SUBDOMAIN" "$SUBDOMAIN" | grep -wf "$PROFANITY_DB_FILE" >>$LOGTO 2>&1; then
+				if printf "%s\n%s" "-$SUBDOMAIN" "$SUBDOMAIN" | grep -wfx "$PROFANITY_DB_FILE" >>$LOGTO 2>&1; then
 					okdlg "$uni_excl Nieprawidłowy początek subdomeny $uni_excl" \
 						"Podana wartość:\n$SUBDOMAIN\n\njest zajęta, zarezerwowana lub niedopuszczalna.\n\nWymyśl coś innego"
 					SUBDOMAIN=''
diff --git a/src/setup.sh b/src/setup.sh
index 03fd0ea..b14defb 100755
--- a/src/setup.sh
+++ b/src/setup.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-### version: 1.5.6
+### version: 1.5.7
 
 # ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.#
 #    Nightscout Mikr.us setup script    #
diff --git a/updated b/updated
index 4344550..3dc84ed 100644
--- a/updated
+++ b/updated
@@ -1 +1 @@
-2023-09-19T07:43:44.441Z
\ No newline at end of file
+2023-09-29T07:38:18.303Z
\ No newline at end of file