diff --git a/lib/krb5/Makefile.am b/lib/krb5/Makefile.am
index 9429535eb..ebf773e64 100644
--- a/lib/krb5/Makefile.am
+++ b/lib/krb5/Makefile.am
@@ -2,7 +2,7 @@
 
 include $(top_srcdir)/Makefile.am.common
 
-AM_CPPFLAGS += $(INCLUDE_krb4) $(INCLUDE_hcrypto) -I../com_err -I$(srcdir)/../com_err $(INCLUDE_sqlite3) $(INCLUDE_libintl)
+AM_CPPFLAGS += $(INCLUDE_hcrypto) -I../com_err -I$(srcdir)/../com_err $(INCLUDE_sqlite3) $(INCLUDE_libintl)
 
 bin_PROGRAMS = verify_krb5_conf