diff --git a/src/util/krb5_locl.h b/src/util/krb5_locl.h
index a85801b0f4..f35ac1b647 100644
--- a/src/util/krb5_locl.h
+++ b/src/util/krb5_locl.h
@@ -26,6 +26,8 @@
 # define FALSE 0
 #endif
 
+#define KRB5_BUFSIZ 1024
+
 #define KRB5_LIB_FUNCTION static AFS_UNUSED
 #define KRB5_LIB_CALL