diff --git a/bsc/regen_makefile.sh b/bsc/regen_makefile.sh
index 9e69bef..fc53e30 100755
--- a/bsc/regen_makefile.sh
+++ b/bsc/regen_makefile.sh
@@ -27,6 +27,7 @@
 	-DIPA_EMULATION_CTRL
 	-DIPA_EMULATION_MGCP
 	-DIPA_EMULATION_RSL
+	-DIPA_EMULATION_OML
 	-DIPA_EMULATION_SCCP
 	-DRAN_EMULATION_BSSAP
 	-DRAN_EMULATION_CTRL