diff --git a/lib/kadm5/Makefile.am b/lib/kadm5/Makefile.am
index 3ed58d5c7..c367eec9e 100644
--- a/lib/kadm5/Makefile.am
+++ b/lib/kadm5/Makefile.am
@@ -2,6 +2,8 @@
 
 include $(top_srcdir)/Makefile.am.common
 
+libkadm5srv_la_CPPFLAGS = -I$(srcdir)/../krb5
+
 lib_LTLIBRARIES = libkadm5srv.la libkadm5clnt.la
 libkadm5srv_la_LDFLAGS = -version-info 8:1:0
 libkadm5clnt_la_LDFLAGS = -version-info 7:1:0