diff --git a/minix/include/sys/ioc_memory.h b/minix/include/sys/ioc_memory.h
index 94c561c02..f025a55bb 100644
--- a/minix/include/sys/ioc_memory.h
+++ b/minix/include/sys/ioc_memory.h
@@ -10,7 +10,5 @@
 #include <minix/ioctl.h>
 
 #define MIOCRAMSIZE	_IOW('m', 3, u32_t)
-#define MIOCMAP		_IOW('m', 4, struct mapreq)
-#define MIOCUNMAP	_IOW('m', 5, struct mapreq)
 
 #endif /* _S_I_MEMORY_H */
diff --git a/minix/include/sys/vm.h b/minix/include/sys/vm.h
index c211a2f2e..8cc23bf0a 100644
--- a/minix/include/sys/vm.h
+++ b/minix/include/sys/vm.h
@@ -5,15 +5,6 @@
 sys/vm.h
 */
 
-/* MIOCMAP */
-struct mapreq
-{
-	void *base;
-	size_t size;
-	off_t offset;
-	int readonly;
-};
-
 /* used in ioctl to tty for mapvm map and unmap request. */
 struct mapreqvm
 {