diff --git a/src/Query/AST/Functions/Mysql/JsonMerge.php b/src/Query/AST/Functions/Mysql/JsonMerge.php
index f5ce757..a912caf 100644
--- a/src/Query/AST/Functions/Mysql/JsonMerge.php
+++ b/src/Query/AST/Functions/Mysql/JsonMerge.php
@@ -61,7 +61,7 @@ public function parse(Parser $parser)
 		$parser->match(Lexer::T_OPEN_PARENTHESIS);
 
 		$this->firstJsonDocExpr = $parser->StringPrimary();
-		$this->jsonDocs[] = $this->firstJsonPathExpr;
+		$this->jsonDocs[] = $this->firstJsonDocExpr;
 
 		$parser->match(Lexer::T_COMMA);