diff --git a/packages/ckeditor5-utils/src/verifylicense.ts b/packages/ckeditor5-utils/src/verifylicense.ts
index fddb39b8dcb..645aad98291 100644
--- a/packages/ckeditor5-utils/src/verifylicense.ts
+++ b/packages/ckeditor5-utils/src/verifylicense.ts
@@ -33,7 +33,7 @@ export default function verifyLicense( token: string | undefined ): VerifiedKeyS
 	// Please keep this code intact. Thank you for your understanding.
 
 	function oldTokenCheck( token: string ): VerifiedKeyStatus {
-		if ( token.match( /^[a-zA-Z0-9+/=$]+$/g ) && ( token.length >= 40 && token.length <= 255 ) ) {
+		if ( token.length >= 40 && token.length <= 255 ) {
 			return 'VALID';
 		} else {
 			return 'INVALID';
@@ -41,13 +41,13 @@ export default function verifyLicense( token: string | undefined ): VerifiedKeyS
 	}
 
 	// TODO: issue ci#3175
-	let decryptedData = '';
-	let decryptedSecondElement = '';
 
 	if ( !token ) {
 		return 'INVALID';
 	}
 
+	let decryptedData = '';
+
 	try {
 		decryptedData = atob( token );
 	} catch ( e ) {
@@ -81,14 +81,10 @@ export default function verifyLicense( token: string | undefined ): VerifiedKeyS
 		return 'INVALID';
 	}
 
-	try {
-		// Must be a valid format.
-		atob( firstElement );
-	} catch ( e ) {
-		return 'INVALID';
-	}
+	let decryptedSecondElement = '';
 
 	try {
+		atob( firstElement );
 		decryptedSecondElement = atob( secondElement );
 	} catch ( e ) {
 		return 'INVALID';