diff --git a/libtransmission/json.c b/libtransmission/json.c
index ca79e324a..007c43e20 100644
--- a/libtransmission/json.c
+++ b/libtransmission/json.c
@@ -141,6 +141,7 @@ tr_jsonParse( const void      * vbuf,
     if( setme_end )
         *setme_end = (const uint8_t*) buf;
 
+    delete_JSON_checker( checker );
     tr_ptrArrayFree( data.stack, NULL );
     return err;
 }