diff --git a/libtcc.c b/libtcc.c
index e5eefe40..10d23879 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -888,6 +888,7 @@ static void tcc_cleanup(void)
     for(i = 0; i < n; i++)
         tcc_free(table_ident[i]);
     tcc_free(table_ident);
+    table_ident = NULL;
 
     /* free sym_pools */
     dynarray_reset(&sym_pools, &nb_sym_pools);
diff --git a/tccpp.c b/tccpp.c
index 82168f72..45e394fa 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -3165,7 +3165,10 @@ ST_FUNC void preprocess_new(void)
         isidnum_table[i-CH_EOF] = isid(i) || isnum(i);
 
     /* add all tokens */
-    table_ident = NULL;
+    if (table_ident) {
+	tcc_free (table_ident);
+	table_ident = NULL;
+    }
     memset(hash_ident, 0, TOK_HASH_SIZE * sizeof(TokenSym *));
     
     tok_ident = TOK_IDENT;