diff --git a/Parser/grammar.c b/Parser/grammar.c
index d8e3897..880bf84 100644
--- a/Parser/grammar.c
+++ b/Parser/grammar.c
@@ -20,7 +20,7 @@
 {
 	grammar *g;
 	
-	g = PyMem_NEW(grammar, 1);
+	g = PyObject_MALLOC(sizeof(grammar));
 	if (g == NULL)
 		Py_FatalError("no mem for new grammar");
 	g->g_ndfas = 0;
@@ -37,7 +37,7 @@
 {
 	dfa *d;
 	
-	PyMem_RESIZE(g->g_dfa, dfa, g->g_ndfas + 1);
+	g->g_dfa = PyObject_REALLOC(g->g_dfa, sizeof(dfa) * (g->g_ndfas + 1));
 	if (g->g_dfa == NULL)
 		Py_FatalError("no mem to resize dfa in adddfa");
 	d = &g->g_dfa[g->g_ndfas++];
@@ -55,7 +55,8 @@
 {
 	state *s;
 	
-	PyMem_RESIZE(d->d_state, state, d->d_nstates + 1);
+	d->d_state = PyObject_REALLOC(d->d_state,
+				      sizeof(state) * (d->d_nstates + 1));
 	if (d->d_state == NULL)
 		Py_FatalError("no mem to resize state in addstate");
 	s = &d->d_state[d->d_nstates++];
@@ -78,7 +79,7 @@
 	assert(0 <= to && to < d->d_nstates);
 	
 	s = &d->d_state[from];
-	PyMem_RESIZE(s->s_arc, arc, s->s_narcs + 1);
+	s->s_arc = PyObject_REALLOC(s->s_arc, sizeof(arc) * (s->s_narcs + 1));
 	if (s->s_arc == NULL)
 		Py_FatalError("no mem to resize arc list in addarc");
 	a = &s->s_arc[s->s_narcs++];
@@ -97,7 +98,8 @@
 			strcmp(ll->ll_label[i].lb_str, str) == 0)
 			return i;
 	}
-	PyMem_RESIZE(ll->ll_label, label, ll->ll_nlabels + 1);
+	ll->ll_label = PyObject_REALLOC(ll->ll_label,
+					sizeof(label) * (ll->ll_nlabels + 1));
 	if (ll->ll_label == NULL)
 		Py_FatalError("no mem to resize labellist in addlabel");
 	lb = &ll->ll_label[ll->ll_nlabels++];