diff --git a/core/my_basic.c b/core/my_basic.c
index da4c0e2..5620515 100755
--- a/core/my_basic.c
+++ b/core/my_basic.c
@@ -81,7 +81,7 @@ extern "C" {
 /** Macros */
 #define _VER_MAJOR 1
 #define _VER_MINOR 1
-#define _VER_REVISION 96
+#define _VER_REVISION 97
 #define _VER_SUFFIX
 #define _MB_VERSION ((_VER_MAJOR * 0x01000000) + (_VER_MINOR * 0x00010000) + (_VER_REVISION))
 #define _STRINGIZE(A) _MAKE_STRINGIZE(A)
@@ -2727,6 +2727,7 @@ int _calc_expression(mb_interpreter_t* s, _ls_node_t** l, _object_t** val) {
 			(*val)->data.string = (char*)mb_malloc(_sl + 1);
 			(*val)->data.string[_sl] = '\0';
 			memcpy((*val)->data.string, _str, _sl + 1);
+			(*val)->ref = false;
 		} else if(c->type == _DT_ARRAY) {
 			(*val)->data = c->data;
 			c->type = _DT_NIL;