1 files changed, 3 insertions, 0 deletions
diff --git a/builtins/psize.c b/builtins/psize.c
index c215472..23abb65 100644
--- a/builtins/psize.c
+++ b/builtins/psize.c
@@ -40,7 +40,10 @@
 #include "../command.h"
 #include "../general.h"
 #include "../sig.h"
+
+#ifndef errno
 extern int errno;
+#endif
 
 int nw;