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-rw-r--r--src/undo.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/undo.cpp b/src/undo.cpp
index 8072540..4ed825c 100644
--- a/src/undo.cpp
+++ b/src/undo.cpp
@@ -1,3 +1,7 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <stdio.h>
#include <string.h>
#include <bsd/sys/queue.h>