diff --git a/build-config.sh b/build-config.sh
index bee511bc..fbb9fc10 100644
--- a/build-config.sh
+++ b/build-config.sh
@@ -133,6 +133,7 @@ include_core_pcem
 # --- MAME cores ---
 include_core_mame2000
 include_core_mame2003
+include_core_mame2003_plus
 include_core_mame2010
 include_core_mame2014
 include_core_mame2016