diff --git a/sim/mn10300/ChangeLog b/sim/mn10300/ChangeLog
index 5638b8621ef..4e377785b4d 100644
--- a/sim/mn10300/ChangeLog
+++ b/sim/mn10300/ChangeLog
@@ -1,3 +1,8 @@
+2021-04-15  John Baldwin  <jhb@FreeBSD.org>
+
+	* Makefile.in: (tmp-igen) Only pass mn10300.igen to igen.
+	* mn10300.igen: Include am33-2.igen.
+
 2021-04-12  Mike Frysinger  <vapier@gentoo.org>
 
 	* interp.c (sim_open): Delete 3rd arg to sim_cpu_alloc_all.
diff --git a/sim/mn10300/Makefile.in b/sim/mn10300/Makefile.in
index 773b7f9a0c5..120958fce6d 100644
--- a/sim/mn10300/Makefile.in
+++ b/sim/mn10300/Makefile.in
@@ -66,9 +66,10 @@ clean-igen:
 	rm -f tmp-igen tmp-insns
 
 IGEN_TRACE= # -G omit-line-numbers # -G trace-rule-selection -G trace-rule-rejection -G trace-entries
-IGEN_INSN=$(srcdir)/mn10300.igen $(srcdir)/am33.igen $(srcdir)/am33-2.igen
+IGEN_INSN=$(srcdir)/mn10300.igen
+IGEN_INSN_INC=$(srcdir)/am33.igen $(srcdir)/am33-2.igen
 IGEN_DC=$(srcdir)/mn10300.dc
-tmp-igen: $(IGEN_INSN) $(IGEN_DC) ../igen/igen
+tmp-igen: $(IGEN_INSN) $(IGEN_INSN_INC) $(IGEN_DC) ../igen/igen
 	$(IGEN) \
 		$(IGEN_TRACE) \
 		-G gen-direct-access \
diff --git a/sim/mn10300/mn10300.igen b/sim/mn10300/mn10300.igen
index c7b83ed141f..80a394309c9 100644
--- a/sim/mn10300/mn10300.igen
+++ b/sim/mn10300/mn10300.igen
@@ -4590,4 +4590,5 @@
 
 
 :include::am33:am33.igen
+:include::am33-2:am33-2.igen