diff --git a/lib/Doctrine/ORM/Query/SqlWalker.php b/lib/Doctrine/ORM/Query/SqlWalker.php
index 095b1f88f..6fb4df5b1 100644
--- a/lib/Doctrine/ORM/Query/SqlWalker.php
+++ b/lib/Doctrine/ORM/Query/SqlWalker.php
@@ -866,11 +866,23 @@ class SqlWalker implements TreeWalker
      * Walks down a RangeVariableDeclaration AST node, thereby generating the appropriate SQL.
      *
      * @param AST\RangeVariableDeclaration $rangeVariableDeclaration
+     *
+     * @return string
+     */
+    public function walkRangeVariableDeclaration($rangeVariableDeclaration)
+    {
+        return $this->generateRangeVariableDeclarationSQL($rangeVariableDeclaration, false);
+    }
+
+    /**
+     * Generate appropriate SQL for RangeVariableDeclaration AST node
+     *
+     * @param AST\RangeVariableDeclaration $rangeVariableDeclaration
      * @param bool $buildNestedJoins
      *
      * @return string
      */
-    public function walkRangeVariableDeclaration($rangeVariableDeclaration, $buildNestedJoins = false)
+    private function generateRangeVariableDeclarationSQL($rangeVariableDeclaration, $buildNestedJoins)
     {
         $class    = $this->em->getClassMetadata($rangeVariableDeclaration->abstractSchemaName);
         $dqlAlias = $rangeVariableDeclaration->aliasIdentificationVariable;
@@ -1126,16 +1138,17 @@ class SqlWalker implements TreeWalker
             : ' INNER JOIN ';
 
         switch (true) {
-            case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\RangeVariableDeclaration):
+            case ($joinDeclaration instanceof AST\RangeVariableDeclaration):
                 $class      = $this->em->getClassMetadata($joinDeclaration->abstractSchemaName);
                 $dqlAlias   = $joinDeclaration->aliasIdentificationVariable;
                 $tableAlias = $this->getSQLTableAlias($class->table['name'], $dqlAlias);
                 $condition = '(' . $this->walkConditionalExpression($join->conditionalExpression) . ')';
-                $condExprConjunction = ($class->isInheritanceTypeJoined() && $joinType != AST\Join::JOIN_TYPE_LEFT && $joinType != AST\Join::JOIN_TYPE_LEFTOUTER && empty($conditions))
+                $isUnconditionalJoin = empty($conditions);
+                $condExprConjunction = ($class->isInheritanceTypeJoined() && $joinType != AST\Join::JOIN_TYPE_LEFT && $joinType != AST\Join::JOIN_TYPE_LEFTOUTER && $isUnconditionalJoin)
                     ? ' AND '
                     : ' ON ';
 
-                $sql .= $this->walkRangeVariableDeclaration($joinDeclaration, !empty($conditions));
+                $sql .= $this->generateRangeVariableDeclarationSQL($joinDeclaration, !$isUnconditionalJoin);
 
                 $conditions = array($condition);
 
@@ -1156,7 +1169,7 @@ class SqlWalker implements TreeWalker
                 $sql .= $condExprConjunction . implode(' AND ', $conditions);
                 break;
 
-            case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\JoinAssociationDeclaration):
+            case ($joinDeclaration instanceof AST\JoinAssociationDeclaration):
                 $sql .= $this->walkJoinAssociationDeclaration($joinDeclaration, $joinType, $join->conditionalExpression);
                 break;
         }
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/GH6464Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/GH6464Test.php
index a69166d5d..75762e7d7 100644
--- a/tests/Doctrine/Tests/ORM/Functional/Ticket/GH6464Test.php
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/GH6464Test.php
@@ -33,10 +33,7 @@ class GH6464Test extends OrmFunctionalTestCase
      */
     public function testIssue()
     {
-
-        $qb = $this->_em->createQueryBuilder();
-
-        $query = $qb
+        $query = $this->_em->createQueryBuilder()
             ->select('p', 'a')
             ->from(GH6464Post::class, 'p')
             ->innerJoin(GH6464Author::class, 'a', 'WITH', 'p.authorId = a.id')
@@ -61,12 +58,6 @@ class GH6464Post
 
     /** @Column(type="integer") */
     public $authorId;
-
-    /** @Column(length=100) */
-    public $title;
-
-    /** @Column(type="text") */
-    public $text;
 }
 
 /**
@@ -84,6 +75,4 @@ abstract class GH6464User
 /** @Entity */
 class GH6464Author extends GH6464User
 {
-    /** @Column(length=50) */
-    public $displayName;
 }