1 files changed, 1 insertions, 0 deletions
diff --git a/trailer.c b/trailer.c
index 9eb1b76119..6a5091a3c4 100644
--- a/trailer.c
+++ b/trailer.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "alloc.h"
 #include "config.h"
+#include "environment.h"
 #include "gettext.h"
 #include "string-list.h"
 #include "run-command.h"