1 files changed, 1 insertions, 1 deletions
diff --git a/undo.cpp b/undo.cpp
index 16349d2..bfedc8c 100644
--- a/undo.cpp
+++ b/undo.cpp
@@ -14,7 +14,7 @@ static uint64
 History_GetActionSize(history_entry_list *History, int i, uint16 ActionCount_EndOfPlayhead)
 {
     history_action *Action = &History->Action[i];
-    if (Action->Type == action_type_swap)
+    if (Action->Type == action_type_swap || Action->Type == action_type_swap_bitmap)
         return Action->Size;
     return 0;
 }