diff --git a/src/mod/languages/mod_basic/my_basic.c b/src/mod/languages/mod_basic/my_basic.c
index a506bea29c..ea9e7f67fc 100644
--- a/src/mod/languages/mod_basic/my_basic.c
+++ b/src/mod/languages/mod_basic/my_basic.c
@@ -5514,6 +5514,7 @@ int _std_str(mb_interpreter_t* s, void** l) {
 		sprintf(chr, "%g", arg.value.float_point);
 	} else {
 		result = MB_FUNC_ERR;
+		free(chr);
 		goto _exit;
 	}
 	mb_check(mb_push_string(s, l, chr));