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-rw-r--r--calendar/gui/main.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/calendar/gui/main.h b/calendar/gui/main.h
index adab317549..81605a55f6 100644
--- a/calendar/gui/main.h
+++ b/calendar/gui/main.h
@@ -1,3 +1,5 @@
+#ifndef MAIN_H
+#define MAIN_H
extern int day_begin, day_end;
extern char *user_name;
@@ -5,3 +7,5 @@ extern int am_pm_flag;
void properties (void);
void day_range_changed (void);
+
+#endif