diff --git a/server/memslot.c b/server/memslot.c
index 4d9d02ba..67eb9130 100644
--- a/server/memslot.c
+++ b/server/memslot.c
@@ -134,8 +134,7 @@ void *memslot_get_virt(RedMemSlotInfo *info, QXLPHYSICAL addr, uint32_t add_size
 void memslot_info_init(RedMemSlotInfo *info,
                        uint32_t num_groups, uint32_t num_slots,
                        uint8_t generation_bits,
-                       uint8_t id_bits,
-                       uint8_t internal_groupslot_id)
+                       uint8_t id_bits)
 {
     uint32_t i;
 
@@ -146,7 +145,6 @@ void memslot_info_init(RedMemSlotInfo *info,
     info->num_memslots = num_slots;
     info->generation_bits = generation_bits;
     info->mem_slot_bits = id_bits;
-    info->internal_groupslot_id = internal_groupslot_id;
 
     info->mem_slots = g_new(MemSlot *, num_groups);
 
diff --git a/server/memslot.h b/server/memslot.h
index 8586ab04..bfa24736 100644
--- a/server/memslot.h
+++ b/server/memslot.h
@@ -40,7 +40,6 @@ typedef struct RedMemSlotInfo {
     uint8_t generation_bits;
     uint8_t memslot_id_shift;
     uint8_t memslot_gen_shift;
-    uint8_t internal_groupslot_id;
     uintptr_t memslot_gen_mask;
     uintptr_t memslot_clean_virt_mask;
 } RedMemSlotInfo;
@@ -66,8 +65,7 @@ void *memslot_get_virt(RedMemSlotInfo *info, QXLPHYSICAL addr, uint32_t add_size
 void memslot_info_init(RedMemSlotInfo *info,
                        uint32_t num_groups, uint32_t num_slots,
                        uint8_t generation_bits,
-                       uint8_t id_bits,
-                       uint8_t internal_groupslot_id);
+                       uint8_t id_bits);
 void memslot_info_destroy(RedMemSlotInfo *info);
 void memslot_info_add_slot(RedMemSlotInfo *info, uint32_t slot_group_id, uint32_t slot_id,
                            uintptr_t addr_delta, uintptr_t virt_start, uintptr_t virt_end,
diff --git a/server/red-worker.cpp b/server/red-worker.cpp
index 3880531b..76589da2 100644
--- a/server/red-worker.cpp
+++ b/server/red-worker.cpp
@@ -976,8 +976,7 @@ RedWorker* red_worker_new(QXLInstance *qxl)
                       init_info.num_memslots_groups,
                       init_info.num_memslots,
                       init_info.memslot_gen_bits,
-                      init_info.memslot_id_bits,
-                      init_info.internal_groupslot_id);
+                      init_info.memslot_id_bits);
 
     worker->event_timeout = INF_EVENT_WAIT;
 
diff --git a/server/tests/test-qxl-parsing.cpp b/server/tests/test-qxl-parsing.cpp
index d68879f1..86baf76a 100644
--- a/server/tests/test-qxl-parsing.cpp
+++ b/server/tests/test-qxl-parsing.cpp
@@ -58,7 +58,7 @@ create_chunk(size_t prefix, uint32_t size, QXLDataChunk* prev, int fill)
 
 static void init_meminfo(RedMemSlotInfo *mem_info)
 {
-    memslot_info_init(mem_info, 1 /* groups */, 1 /* slots */, 1, 1, 0);
+    memslot_info_init(mem_info, 1 /* groups */, 1 /* slots */, 1, 1);
     memslot_info_add_slot(mem_info, 0, 0, 0 /* delta */, 0 /* start */, UINTPTR_MAX /* end */, 0 /* generation */);
 }