diff --git a/src/timezone/zic.c b/src/timezone/zic.c
index 8d4347a47a3..f9cbac9f006 100644
--- a/src/timezone/zic.c
+++ b/src/timezone/zic.c
@@ -3485,7 +3485,10 @@ int
 link(const char *oldpath, const char *newpath)
 {
 	if (!CopyFile(oldpath, newpath, false))
+	{
+		_dosmaperr(GetLastError());
 		return -1;
+	}
 	return 0;
 }
 #endif