diff --git a/rtemsbsd/powerpc/include/linux/bitops.h b/rtemsbsd/powerpc/include/linux/bitops.h
index 1348697c..42faa345 100644
--- a/rtemsbsd/powerpc/include/linux/bitops.h
+++ b/rtemsbsd/powerpc/include/linux/bitops.h
@@ -33,6 +33,7 @@
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/errno.h>
 
 #define	BIT(nr)			(1UL << (nr))
 #ifdef __LP64__