diff --git a/lib/private/util.php b/lib/private/util.php
index 0fda55496d..f110d618f7 100644
--- a/lib/private/util.php
+++ b/lib/private/util.php
@@ -1054,6 +1054,7 @@ class OC_Util {
 		return $id;
 	}
 
+	protected static $encryptedToken;
 	/**
 	 * Register an get/post call. Important to prevent CSRF attacks.
 	 *
@@ -1066,6 +1067,11 @@ class OC_Util {
 	 * @see OC_Util::isCallRegistered()
 	 */
 	public static function callRegister() {
+		// Use existing token if function has already been called
+		if(isset(self::$encryptedToken)) {
+			return self::$encryptedToken;
+		}
+
 		// Check if a token exists
 		if (!\OC::$server->getSession()->exists('requesttoken')) {
 			// No valid token found, generate a new one.
@@ -1078,7 +1084,8 @@ class OC_Util {
 
 		// Encrypt the token to mitigate breach-like attacks
 		$sharedSecret = \OC::$server->getSecureRandom()->getMediumStrengthGenerator()->generate(10);
-		return \OC::$server->getCrypto()->encrypt($requestToken, $sharedSecret) . ':' . $sharedSecret;
+		self::$encryptedToken = \OC::$server->getCrypto()->encrypt($requestToken, $sharedSecret) . ':' . $sharedSecret;
+		return self::$encryptedToken;
 	}
 
 	/**