3 files changed, 7 insertions, 6 deletions
diff --git a/src/jalv.c b/src/jalv.c
index 65a6a34..eb6545a 100644
--- a/src/jalv.c
+++ b/src/jalv.c
@@ -275,11 +275,7 @@ jalv_create_ports(Jalv* jalv)
 void
 jalv_allocate_port_buffers(Jalv* jalv)
 {
-  const LV2_URID atom_Chunk = jalv->map.map(
-    jalv->map.handle, lilv_node_as_string(jalv->nodes.atom_Chunk));
-
-  const LV2_URID atom_Sequence = jalv->map.map(
-    jalv->map.handle, lilv_node_as_string(jalv->nodes.atom_Sequence));
+  const JalvURIDs* const urids = &jalv->urids;
 
   for (uint32_t i = 0; i < jalv->num_ports; ++i) {
     JalvPort* const port = &jalv->ports[i];
@@ -288,7 +284,8 @@ jalv_allocate_port_buffers(Jalv* jalv)
 
       const size_t size = port->buf_size ? port->buf_size : jalv->midi_buf_size;
 
-      port->evbuf = lv2_evbuf_new(size, atom_Chunk, atom_Sequence);
+      port->evbuf =
+        lv2_evbuf_new(size, urids->atom_Chunk, urids->atom_Sequence);
 
       lilv_instance_connect_port(
         jalv->instance, i, lv2_evbuf_get_buffer(port->evbuf));
diff --git a/src/urids.c b/src/urids.c
index 7ca033b..022ab66 100644
--- a/src/urids.c
+++ b/src/urids.c
@@ -19,10 +19,12 @@ jalv_init_urids(Symap* const symap, JalvURIDs* const urids)
 {
 #define MAP_URI(uri) symap_map(symap, (uri))
 
+  urids->atom_Chunk           = MAP_URI(LV2_ATOM__Chunk);
   urids->atom_Float           = MAP_URI(LV2_ATOM__Float);
   urids->atom_Int             = MAP_URI(LV2_ATOM__Int);
   urids->atom_Object          = MAP_URI(LV2_ATOM__Object);
   urids->atom_Path            = MAP_URI(LV2_ATOM__Path);
+  urids->atom_Sequence        = MAP_URI(LV2_ATOM__Sequence);
   urids->atom_String          = MAP_URI(LV2_ATOM__String);
   urids->atom_eventTransfer   = MAP_URI(LV2_ATOM__eventTransfer);
   urids->bufsz_maxBlockLength = MAP_URI(LV2_BUF_SIZE__maxBlockLength);
diff --git a/src/urids.h b/src/urids.h
index bf8d7ad..ee00d66 100644
--- a/src/urids.h
+++ b/src/urids.h
@@ -12,10 +12,12 @@
 JALV_BEGIN_DECLS
 
 typedef struct {
+  LV2_URID atom_Chunk;
   LV2_URID atom_Float;
   LV2_URID atom_Int;
   LV2_URID atom_Object;
   LV2_URID atom_Path;
+  LV2_URID atom_Sequence;
   LV2_URID atom_String;
   LV2_URID atom_eventTransfer;
   LV2_URID bufsz_maxBlockLength;