diff --git a/src/library/process.h b/src/library/process.h
index 212e11a036..772f81fd1a 100644
--- a/src/library/process.h
+++ b/src/library/process.h
@@ -16,8 +16,8 @@ Author: Jared Roesch
 namespace lean  {
 
 enum stdio {
-    INHERIT,
     PIPED,
+    INHERIT,
     NUL,
 };