1 files changed, 1 insertions, 0 deletions

diff --git a/build/file.cxx b/build/file.cxx
index 7e3555f..970957b 100644
--- a/build/file.cxx
+++ b/build/file.cxx
@@ -6,6 +6,7 @@
 
 #include <fstream>
 #include <utility> // move()
+#include <system_error>
 
 #include <butl/filesystem>