diff --git a/modules/ui/src/app/pages/devices/components/device-form/device.validators.ts b/modules/ui/src/app/pages/devices/components/device-form/device.validators.ts
index 8ef530bad..cb882743b 100644
--- a/modules/ui/src/app/pages/devices/components/device-form/device.validators.ts
+++ b/modules/ui/src/app/pages/devices/components/device-form/device.validators.ts
@@ -23,10 +23,10 @@ import { Device } from '../../../../model/device';
  */
 export class DeviceValidators {
   static readonly STRING_FORMAT_MAX_LENGTH = 28;
+
+  // Not allowed symbols: <>?/:;@'"][=^!\#$%&*+{}|()
   readonly STRING_FORMAT_REGEXP = new RegExp(
-    "^([a-z0-9\\p{L}\\p{M}.',-_ ]{1," +
-      DeviceValidators.STRING_FORMAT_MAX_LENGTH +
-      '})$',
+    '^([^<>?:;@\'\\\\"\\[\\]=^!/,.#$%&*+{}|()]{1,28})$',
     'u'
   );
 
diff --git a/modules/ui/src/app/pages/devices/components/device-qualification-from/device-qualification-from.component.spec.ts b/modules/ui/src/app/pages/devices/components/device-qualification-from/device-qualification-from.component.spec.ts
index c366aec23..51b0c56a6 100644
--- a/modules/ui/src/app/pages/devices/components/device-qualification-from/device-qualification-from.component.spec.ts
+++ b/modules/ui/src/app/pages/devices/components/device-qualification-from/device-qualification-from.component.spec.ts
@@ -227,6 +227,10 @@ describe('DeviceQualificationFromComponent', () => {
       [
         'very long value very long value very long value very long value very long value very long value very long value',
         'as&@3$',
+        'test/',
+        'test|',
+        'test[',
+        ':test',
       ].forEach(value => {
         const model: HTMLInputElement = compiled.querySelector(
           '.device-qualification-form-model'
@@ -273,6 +277,10 @@ describe('DeviceQualificationFromComponent', () => {
       [
         'very long value very long value very long value very long value very long value very long value very long value',
         'as&@3$',
+        'test/',
+        'test|',
+        'test[',
+        ':test',
       ].forEach(value => {
         const manufacturer: HTMLInputElement = compiled.querySelector(
           '.device-qualification-form-manufacturer'