1 files changed, 2 insertions, 0 deletions

diff --git a/config.cc b/config.cc
index 5b25d066..f6ffef0e 100644
--- a/config.cc
+++ b/config.cc
@@ -11,6 +11,8 @@
 #include <cstdlib>
 #ifdef WIN32
 #include <io.h>
+#else
+#include <unistd.h>
 #endif
 
 namespace ledger {