diff --git a/reference/mysqli/mysqli/commit.xml b/reference/mysqli/mysqli/commit.xml
index d05936ed32..6912d941f9 100644
--- a/reference/mysqli/mysqli/commit.xml
+++ b/reference/mysqli/mysqli/commit.xml
@@ -111,8 +111,8 @@ $mysqli->query("INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");
 
 /* commit transaction */
 if (!$mysqli->commit()) {
-	print("Transaction commit failed\n");
-	exit();
+    print("Transaction commit failed\n");
+    exit();
 }
 
 /* drop table */
@@ -146,8 +146,8 @@ mysqli_query($link, "INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");
 
 /* commit transaction */
 if (!mysqli_commit($link)) {
-	print("Transaction commit failed\n");
-	exit();
+    print("Transaction commit failed\n");
+    exit();
 }
 
 /* close connection */
diff --git a/reference/yar/yar_concurrent_client/loop.xml b/reference/yar/yar_concurrent_client/loop.xml
index b5ed52add1..1d7c94d38c 100644
--- a/reference/yar/yar_concurrent_client/loop.xml
+++ b/reference/yar/yar_concurrent_client/loop.xml
@@ -66,8 +66,8 @@ function callback($retval, $callinfo) {
      if ($callinfo == NULL) {
         echo "Now, all requests are sent, and no any response available\n";
      } else {
-		      echo "This is a remote call response, the method name is", $callinfo["method"], 
-			          ". calling sequence is " , $callinfo["sequence"] , "\n";
+        echo "This is a remote call response, the method name is", $callinfo["method"], 
+             ". calling sequence is " , $callinfo["sequence"] , "\n";
         var_dump($retval);
      }
 }