diff --git a/bsd-compat/bsd-compat.h b/bsd-compat/bsd-compat.h
index 853f171..5ecc771 100644
--- a/bsd-compat/bsd-compat.h
+++ b/bsd-compat/bsd-compat.h
@@ -1,6 +1,10 @@
 #ifndef BSD_COMPAT_H
 #define BSD_COMPAT_H
 
+#ifdef USE_LIBBSD
+#include <bsd/bsd.h>
+#endif
+
 #ifndef HAVE_ISSETUGID
 #define issetugid _sndio_issetugid
 int issetugid(void);
diff --git a/configure b/configure
index 22bfbda..fc0dcab 100755
--- a/configure
+++ b/configure
@@ -237,7 +237,7 @@ fi
 #
 if [ $libbsd = yes ]; then
 	# no arc4random as libbsd has a questionable implementation
-	defs="$defs -DHAVE_STRLCPY -DHAVE_STRLCAT -DHAVE_STRTONUM"
+	defs="$defs -DUSE_LIBBSD -DHAVE_STRLCPY -DHAVE_STRLCAT -DHAVE_STRTONUM"
 	ldadd="$ldadd -lbsd"
 fi