diff --git a/efiler/fileops.cpp b/efiler/fileops.cpp
index 57737bc..4182236 100644
--- a/efiler/fileops.cpp
+++ b/efiler/fileops.cpp
@@ -18,6 +18,7 @@
 #include "fileops.h"
 
 #include <sys/stat.h>
+#include <unistd.h> // for unlink()
 
 #include <Fl/Fl_Window.H>
 #include <Fl/Fl_Progress.H>