diff --git a/makefile.burn_rules b/makefile.burn_rules
index 1837a57bc..0053cbf8d 100644
--- a/makefile.burn_rules
+++ b/makefile.burn_rules
@@ -87,7 +87,7 @@ drvsrc	= 	d_akkaarrh.o d_arcadecl.o d_atarig1.o d_badlands.o d_batman.o d_blstro
 			\
 			d_parent.o \
 			\
-			d_megadrive.o d_mdarcbl.cpp \
+			d_megadrive.o d_mdarcbl.o \
 			\
 			d_pce.o \
 			\