diff --git a/mtproto.php b/mtproto.php
index bdf349b9..02ab8c45 100755
--- a/mtproto.php
+++ b/mtproto.php
@@ -230,7 +230,7 @@ class Session
         $server_nonce = $ResPQ['server_nonce'];
         $public_key_fingerprint = $ResPQ['server_public_key_fingerprints'][0];
         $pq_bytes = $ResPQ['pq'];
-        
+
         $pq = new \phpseclib\Math\BigInteger($pq_bytes, 256);
         var_dump($this->PrimeModule->primefactors($pq));
         die;
diff --git a/prime.php b/prime.php
index f376b7a9..d5b08685 100644
--- a/prime.php
+++ b/prime.php
@@ -79,10 +79,10 @@ class PrimeModule
         $one = new \phpseclib\Math\BigInteger(1);
         $two = new \phpseclib\Math\BigInteger(2);
         $three = new \phpseclib\Math\BigInteger(3);
-        if ($n->powMod($one, $two)->toString() == "0") {
+        if ($n->powMod($one, $two)->toString() == '0') {
             return 2;
         }
-        if ($n->powMod($one, $three)->toString() == "0") {
+        if ($n->powMod($one, $three)->toString() == '0') {
             return 3;
         }
         $big = new \phpseclib\Math\BigInteger();
@@ -136,7 +136,7 @@ class PrimeModule
             if ($limit->compare($checker) == -1) {
                 break;
             }
-            while ($n->modPow($one, $checker)->toString() == "0") {
+            while ($n->modPow($one, $checker)->toString() == '0') {
                 $factors[] = $checker;
                 $n = $n->divide($checker)[0];
                 $limit = $n->root()->add($one);