diff --git a/Database/Query.php b/Database/Query.php
index df21a8c..2763450 100644
--- a/Database/Query.php
+++ b/Database/Query.php
@@ -901,7 +901,7 @@ protected function _build_where()
 				// Nothing
 			}
 			else {
-				$condition .= $this->_where[$i]['operator'];
+				$condition .= $this->_where[$i]['operator'].' ';
 			}
 
 			if ( $this->_where[$i]['group'] !== null ) {