diff --git a/ChangeLog b/ChangeLog
index b201c86..ace35e0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 /* $Id$ */
 
+2012-10-23
+- fixed compilation error with gcc 4.7.2 (thx Magnus Numelin)
+
 2012-07-22
 - added support for semicolon-separated CSV files
 - fixed warning in import.cc
diff --git a/src/file.cc b/src/file.cc
index dd5bcfa..bc3edab 100644
--- a/src/file.cc
+++ b/src/file.cc
@@ -2,6 +2,7 @@
 
 #include <cstring>
 #include <cerrno>
+#include <unistd.h>
 #include "throw.h"
 #include "intl.h"
 #include "file.h"