diff --git a/Makefile b/Makefile
index a9172c627c..d577b76fea 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ OBJS = native/arithmetic.o native/array.o native/bignum.o \
 	native/complex.o native/cons.o native/error.o \
 	native/factor.o native/file.o native/fixnum.o \
 	native/float.o native/gc.o \
-	native/image.o native/iomux.o native/memory.o \
+	native/image.o native/io.o native/memory.o \
 	native/misc.o native/port.o native/primitives.o \
 	native/ratio.o native/read.o native/relocate.o \
 	native/run.o \
diff --git a/native/factor.h b/native/factor.h
index fdd5eef3e6..7e85dc8ed9 100644
--- a/native/factor.h
+++ b/native/factor.h
@@ -54,7 +54,7 @@ typedef unsigned short CHAR;
 #include "string.h"
 #include "sbuf.h"
 #include "port.h"
-#include "iomux.h"
+#include "io.h"
 #include "read.h"
 #include "write.h"
 #include "file.h"
diff --git a/native/iomux.c b/native/io.c
similarity index 100%
rename from native/iomux.c
rename to native/io.c
diff --git a/native/iomux.h b/native/io.h
similarity index 100%
rename from native/iomux.h
rename to native/io.h