diff --git a/src/core/services/sites.ts b/src/core/services/sites.ts
index e6538fd4e..032ebcf23 100644
--- a/src/core/services/sites.ts
+++ b/src/core/services/sites.ts
@@ -262,7 +262,7 @@ export class CoreSitesProvider {
         }
 
         // Service supported but an error happened. Return error.
-        if (error.errorcode == 'codingerror') {
+        if (error.errorcode === 'codingerror') {
             // This could be caused by a redirect. Check if it's the case.
             const redirect = await CoreUtils.checkRedirect(siteUrl);
 
@@ -272,6 +272,9 @@ export class CoreSitesProvider {
                 // We can't be sure if there is a redirect or not. Display cannot connect error.
                 error.message = Translate.instant('core.cannotconnecttrouble');
             }
+        } else if (error.errorcode === 'invalidrecord') {
+            // WebService not found, site not supported.
+            error.message = Translate.instant('core.login.invalidmoodleversion', { $a: CoreSite.MINIMUM_MOODLE_VERSION });
         }
 
         return new CoreSiteError({