1 files changed, 3 insertions, 0 deletions
diff --git a/hash.c b/hash.c
index 920885709e..b355d0661e 100644
--- a/hash.c
+++ b/hash.c
@@ -14,6 +14,9 @@
 #include "st.h"
 #include "sig.h"
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 #include <sys/stat.h>
 
 #ifndef HAVE_STRING_H