diff --git a/include/hardware/qemu_pipe.h b/include/hardware/qemu_pipe.h
index 930228e8..000c99ee 100644
--- a/include/hardware/qemu_pipe.h
+++ b/include/hardware/qemu_pipe.h
@@ -23,6 +23,7 @@
 #include <pthread.h>  /* for pthread_once() */
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 #ifndef D
 #  define  D(...)   do{}while(0)