diff --git a/htdocs/lib/databases/mssql.lib.php b/htdocs/lib/databases/mssql.lib.php
index 7c04d8daa40..904c1b49b06 100644
--- a/htdocs/lib/databases/mssql.lib.php
+++ b/htdocs/lib/databases/mssql.lib.php
@@ -387,7 +387,7 @@ class DoliDb
                 $this->lastqueryerror = $query;
 				$this->lasterror = $this->error();
 				$this->lasterrno = $row["code"];
-                dol_syslog("Mssql.lib::query SQL error: ".$query, LOG_ERR);
+                dol_syslog("Mssql.lib::query SQL error: ".$query, LOG_WARNING);
 			}
 			$this->lastquery=$query;
 			$this->results = $ret;
diff --git a/htdocs/lib/databases/mysql.lib.php b/htdocs/lib/databases/mysql.lib.php
index ba447cd2787..12267fa0726 100644
--- a/htdocs/lib/databases/mysql.lib.php
+++ b/htdocs/lib/databases/mysql.lib.php
@@ -383,7 +383,7 @@ class DoliDb
 				$this->lastqueryerror = $query;
 				$this->lasterror = $this->error();
 				$this->lasterrno = $this->errno();
-                dol_syslog("Mysql.lib::query SQL error: ".$query, LOG_ERR);
+                dol_syslog("Mysql.lib::query SQL error: ".$query, LOG_WARNING);
 			}
 			$this->lastquery=$query;
 			$this->results = $ret;
diff --git a/htdocs/lib/databases/mysqli.lib.php b/htdocs/lib/databases/mysqli.lib.php
index fb8d5b534f2..f4c32c858e7 100644
--- a/htdocs/lib/databases/mysqli.lib.php
+++ b/htdocs/lib/databases/mysqli.lib.php
@@ -388,7 +388,7 @@ class DoliDb
 				$this->lastqueryerror = $query;
 				$this->lasterror = $this->error();
 				$this->lasterrno = $this->errno();
-                dol_syslog("Mysqli.lib::query SQL error: ".$query, LOG_ERR);
+                dol_syslog("Mysqli.lib::query SQL error: ".$query, LOG_WARNING);
 			}
 			$this->lastquery=$query;
 			$this->results = $ret;
diff --git a/htdocs/lib/databases/pgsql.lib.php b/htdocs/lib/databases/pgsql.lib.php
index fc4c24bbf27..83f88b558a8 100644
--- a/htdocs/lib/databases/pgsql.lib.php
+++ b/htdocs/lib/databases/pgsql.lib.php
@@ -514,7 +514,7 @@ class DoliDb
 				$this->lastqueryerror = $query;
 				$this->lasterror = $this->error();
 				$this->lasterrno = $this->errno();
-				dol_syslog("Pgsql.lib::query SQL error: ".$query, LOG_ERR);
+				dol_syslog("Pgsql.lib::query SQL error: ".$query, LOG_WARNING);
 				//print "\n>> ".$query."<br>\n";
 				//print '>> '.$this->lasterrno.' - '.$this->lasterror.' - '.$this->lastqueryerror."<br>\n";