diff --git a/include/uv/unix.h b/include/uv/unix.h
index bf786c9b..9080352d 100644
--- a/include/uv/unix.h
+++ b/include/uv/unix.h
@@ -49,6 +49,8 @@
 # include "uv/linux.h"
 #elif defined (__MVS__)
 # include "uv/os390.h"
+#elif defined(__PASE__)  /* __PASE__ and _AIX are both defined on IBM i */
+# include "uv/posix.h"  /* IBM i needs uv/posix.h, not uv/aix.h */
 #elif defined(_AIX)
 # include "uv/aix.h"
 #elif defined(__sun)
@@ -61,8 +63,7 @@
       defined(__OpenBSD__)         || \
       defined(__NetBSD__)
 # include "uv/bsd.h"
-#elif defined(__PASE__)   || \
-      defined(__CYGWIN__) || \
+#elif defined(__CYGWIN__) || \
       defined(__MSYS__)   || \
       defined(__GNU__)
 # include "uv/posix.h"