diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 9c7f6935237..bd142abc28c 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -1502,6 +1502,7 @@ function createMESSProjects(_target, _subtarget, _name)
 	}
 
 	includedirs {
+		ext_includedir("flac"),
 		ext_includedir("zlib")
 	}
 end