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-rw-r--r--libical/src/libical/icalversion.h.in4
1 files changed, 4 insertions, 0 deletions
diff --git a/libical/src/libical/icalversion.h.in b/libical/src/libical/icalversion.h.in
index aaeeed6666..5d213693e5 100644
--- a/libical/src/libical/icalversion.h.in
+++ b/libical/src/libical/icalversion.h.in
@@ -1,3 +1,7 @@
+#ifndef ICAL_VERSION_H
+#define ICAL_VERSION_H
#define ICAL_PACKAGE "@PACKAGE@"
#define ICAL_VERSION "@VERSION@"
+
+#endif