diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 4af14b0926d..d9b3f27dc62 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2003-03-09  Paolo Carlini  <pcarlini@unitus.it>
+
+	* config/io/basic_file_stdio.cc: include <unistd.h>.
+
 2003-03-09  Paolo Carlini  <pcarlini@unitus.it>
             Nathan Myers  <ncm@cantrip.org>
 
diff --git a/libstdc++-v3/config/io/basic_file_stdio.cc b/libstdc++-v3/config/io/basic_file_stdio.cc
index 881792e7f81..7f4c909e574 100644
--- a/libstdc++-v3/config/io/basic_file_stdio.cc
+++ b/libstdc++-v3/config/io/basic_file_stdio.cc
@@ -33,6 +33,7 @@
 
 #include <bits/basic_file.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <errno.h>
 
 namespace std