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-rw-r--r--sim/universe.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/sim/universe.cc b/sim/universe.cc
index 69563650d..52353db11 100644
--- a/sim/universe.cc
+++ b/sim/universe.cc
@@ -28,6 +28,7 @@
#include <sys/types.h>
#include <sys/stat.h>
+#include <errno.h>
#include <cstring>
#include <fstream>