diff --git a/modules/ui/src/app/pages/devices/components/device-form/device-form.component.html b/modules/ui/src/app/pages/devices/components/device-form/device-form.component.html
index 11f87ff33..5978f6d22 100644
--- a/modules/ui/src/app/pages/devices/components/device-form/device-form.component.html
+++ b/modules/ui/src/app/pages/devices/components/device-form/device-form.component.html
@@ -31,7 +31,7 @@
       role="alert"
       aria-live="assertive">
       <span
-        >Please, check. The manufacturer name must be a maximum of 64
+        >Please, check. The manufacturer name must be a maximum of 28
         characters. Only letters, numbers, and accented letters are
         permitted.</span
       >
@@ -49,7 +49,7 @@
       role="alert"
       aria-live="assertive">
       <span
-        >Please, check. The device model name must be a maximum of 64
+        >Please, check. The device model name must be a maximum of 28
         characters. Only letters, numbers, and accented letters are
         permitted.</span
       >
diff --git a/modules/ui/src/app/pages/devices/components/device-form/device-form.component.spec.ts b/modules/ui/src/app/pages/devices/components/device-form/device-form.component.spec.ts
index 4ffbb402e..6ea72aa52 100644
--- a/modules/ui/src/app/pages/devices/components/device-form/device-form.component.spec.ts
+++ b/modules/ui/src/app/pages/devices/components/device-form/device-form.component.spec.ts
@@ -240,7 +240,7 @@ describe('DeviceFormComponent', () => {
 
         expect(error).toBeTruthy();
         expect(modelError).toContain(
-          'The device model name must be a maximum of 64 characters. Only letters, numbers, and accented letters are permitted.'
+          'The device model name must be a maximum of 28 characters. Only letters, numbers, and accented letters are permitted.'
         );
       });
     });
@@ -283,7 +283,7 @@ describe('DeviceFormComponent', () => {
 
         expect(error).toBeTruthy();
         expect(manufacturerError).toContain(
-          'The manufacturer name must be a maximum of 64 characters. Only letters, numbers, and accented letters are permitted.'
+          'The manufacturer name must be a maximum of 28 characters. Only letters, numbers, and accented letters are permitted.'
         );
       });
     });
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 5e54e7996..2b7b23ae1 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
@@ -23,15 +23,28 @@ import { Device } from '../../../../model/device';
  */
 export class DeviceValidators {
   readonly STRING_FORMAT_REGEXP = new RegExp(
+    "^([a-z0-9\\p{L}\\p{M}.',-_ ]{1,28})$",
+    'u'
+  );
+
+  readonly FIRMWARE_FORMAT_REGEXP = new RegExp(
     "^([a-z0-9\\p{L}\\p{M}.',-_ ]{1,64})$",
     'u'
   );
 
   public deviceStringFormat(): ValidatorFn {
+    return this.stringFormat(this.STRING_FORMAT_REGEXP);
+  }
+
+  public firmwareStringFormat(): ValidatorFn {
+    return this.stringFormat(this.FIRMWARE_FORMAT_REGEXP);
+  }
+
+  private stringFormat(regExp: RegExp): ValidatorFn {
     return (control: AbstractControl): ValidationErrors | null => {
       const value = control.value?.trim();
       if (value) {
-        const result = this.STRING_FORMAT_REGEXP.test(value);
+        const result = regExp.test(value);
         return !result ? { invalid_format: true } : null;
       }
       return null;
diff --git a/modules/ui/src/app/pages/reports/components/filter-dialog/filter-dialog.component.ts b/modules/ui/src/app/pages/reports/components/filter-dialog/filter-dialog.component.ts
index f8fea286b..3d8ac231a 100644
--- a/modules/ui/src/app/pages/reports/components/filter-dialog/filter-dialog.component.ts
+++ b/modules/ui/src/app/pages/reports/components/filter-dialog/filter-dialog.component.ts
@@ -162,7 +162,7 @@ export class FilterDialogComponent
   private createFilterForm() {
     this.filterForm = this.fb.group({
       deviceInfo: ['', [this.deviceValidators.deviceStringFormat()]],
-      deviceFirmware: ['', [this.deviceValidators.deviceStringFormat()]],
+      deviceFirmware: ['', [this.deviceValidators.firmwareStringFormat()]],
       results: new FormArray(this.resultList.map(() => new FormControl(false))),
     });
   }
diff --git a/modules/ui/src/app/pages/testrun/components/progress-initiate-form/progress-initiate-form.component.ts b/modules/ui/src/app/pages/testrun/components/progress-initiate-form/progress-initiate-form.component.ts
index cf323ec11..754d0ea5b 100644
--- a/modules/ui/src/app/pages/testrun/components/progress-initiate-form/progress-initiate-form.component.ts
+++ b/modules/ui/src/app/pages/testrun/components/progress-initiate-form/progress-initiate-form.component.ts
@@ -149,7 +149,7 @@ export class ProgressInitiateFormComponent
 
   private createInitiateForm() {
     this.initiateForm = this.fb.group({
-      firmware: ['', [this.deviceValidators.deviceStringFormat()]],
+      firmware: ['', [this.deviceValidators.firmwareStringFormat()]],
       test_modules: new FormArray([]),
     });
   }