diff --git a/projects/common/services/sanitization.service.ts b/projects/common/services/sanitization.service.ts
index 7c158cfa51eaa4c7fd8037ace7cdd265210f0b00..292a919396b8758d6ee44cbcea36c47092879f88 100644
--- a/projects/common/services/sanitization.service.ts
+++ b/projects/common/services/sanitization.service.ts
@@ -106,13 +106,13 @@ export class SanitizationService {
 
   private static isVersionOlderThanCurrent(version: [number, number, number]): boolean {
     if (!version) return true;
-    if (version[0] < SanitizationService.expectedUnitVersion[0]) {
+    if (Number(version[0]) < Number(SanitizationService.expectedUnitVersion[0])) {
       return true;
     }
-    if (version[1] < SanitizationService.expectedUnitVersion[1]) {
+    if (Number(version[1]) < Number(SanitizationService.expectedUnitVersion[1])) {
       return true;
     }
-    return version[2] < SanitizationService.expectedUnitVersion[2];
+    return Number(version[2]) < Number(SanitizationService.expectedUnitVersion[2]);
   }
 
   private sanitizePage(page: Page): Partial<Page> {