diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index bca6d0798b8..cc373acc163 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -253,6 +253,8 @@ class DoliDBMysql extends DoliDB
 	 */
 	function query($query,$usesavepoint=0,$type='auto')
 	{
+		global $conf;
+
 		$query = trim($query);
 
 		if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
@@ -277,7 +279,8 @@ class DoliDBMysql extends DoliDB
 				$this->lasterror = $this->error();
 				$this->lasterrno = $this->errno();
 
-                dol_syslog(get_class($this)."::query SQL Error message: ".$this->lasterrno." ".$this->lasterror, LOG_ERR);
+				if ($conf->global->SYSLOG_LEVEL < LOG_DEBUG) dol_syslog(get_class($this)."::query SQL Error query: ".$query, LOG_ERR);	// Log of request was not yet done previously
+				dol_syslog(get_class($this)."::query SQL Error message: ".$this->lasterrno." ".$this->lasterror, LOG_ERR);
 			}
 			$this->lastquery=$query;
 			$this->_results = $ret;
diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index d714a277ae0..4033dc01117 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -255,6 +255,8 @@ class DoliDBMysqli extends DoliDB
      */
     function query($query,$usesavepoint=0,$type='auto')
     {
+    	global $conf;
+
         $query = trim($query);
 
 	    if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
@@ -278,6 +280,7 @@ class DoliDBMysqli extends DoliDB
                 $this->lasterror = $this->error();
                 $this->lasterrno = $this->errno();
 
+				if ($conf->global->SYSLOG_LEVEL < LOG_DEBUG) dol_syslog(get_class($this)."::query SQL Error query: ".$query, LOG_ERR);	// Log of request was not yet done previously
                 dol_syslog(get_class($this)."::query SQL Error message: ".$this->lasterrno." ".$this->lasterror, LOG_ERR);
             }
             $this->lastquery=$query;
diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index 0466c2ad96b..41bd45bebff 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -509,11 +509,11 @@ class DoliDBPgsql extends DoliDB
     				$this->lastqueryerror = $query;
     				$this->lasterror = $this->error();
     				$this->lasterrno = $this->errno();
-			    }
 
-				dol_syslog(get_class($this)."::query SQL Error query: ".$query, LOG_ERR);
-				dol_syslog(get_class($this)."::query SQL Error message: ".$this->lasterror." (".$this->lasterrno.")", LOG_ERR);
-				dol_syslog(get_class($this)."::query SQL error usesavepoint = ".$usesavepoint, LOG_ERR);
+    				if ($conf->global->SYSLOG_LEVEL < LOG_DEBUG) dol_syslog(get_class($this)."::query SQL Error query: ".$query, LOG_ERR);	// Log of request was not yet done previously
+					dol_syslog(get_class($this)."::query SQL Error message: ".$this->lasterror." (".$this->lasterrno.")", LOG_ERR);
+					dol_syslog(get_class($this)."::query SQL Error usesavepoint = ".$usesavepoint, LOG_ERR);
+			    }
 
 				if ($usesavepoint && $this->transaction_opened)	// Warning, after that errno will be erased
 				{