diff --git a/appl/kx/kx.h b/appl/kx/kx.h
index 4be21059b..1d129eea4 100644
--- a/appl/kx/kx.h
+++ b/appl/kx/kx.h
@@ -106,10 +106,9 @@
 
 #include <krb.h>
 
+#include <err.h>
 #include <roken.h>
 
-extern char *prog;
-
 int copy_encrypted (int fd1, int fd2, des_cblock *iv,
 		    des_key_schedule schedule);
 
diff --git a/appl/otp/otp_locl.h b/appl/otp/otp_locl.h
index 1dd0af0da..f8329b74d 100644
--- a/appl/otp/otp_locl.h
+++ b/appl/otp/otp_locl.h
@@ -56,5 +56,6 @@
 #include <pwd.h>
 #endif
 #include <roken.h>
+#include <err.h>
 #include <des.h>
 #include <otp.h>