diff --git a/lib/datalib.php b/lib/datalib.php
index 5c1524f053f..d5740f4faea 100644
--- a/lib/datalib.php
+++ b/lib/datalib.php
@@ -21,8 +21,16 @@ function execute_sql($command, $feedback=true) {
 
     global $db;
 
+    $olddebug = $db->debug;
+
+    if (!$feedback) {
+        $db->debug = false;
+    }
+
     $result = $db->Execute("$command");
 
+    $db->debug = $olddebug;
+
     if ($result) {
         if ($feedback) {
             echo "<P><FONT COLOR=green><B>".get_string("success")."</B></FONT></P>";