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-rw-r--r--src/persp3d.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/persp3d.cpp b/src/persp3d.cpp
index 0b346622a..4e15a4de4 100644
--- a/src/persp3d.cpp
+++ b/src/persp3d.cpp
@@ -15,6 +15,7 @@
#include "perspective-line.h"
#include "attributes.h"
#include "document-private.h"
+#include "document-undo.h"
#include "vanishing-point.h"
#include "box3d-context.h"
#include "box3d.h"