diff --git a/Makeconf b/Makeconf
index 501c5d6..5d14190 100644
--- a/Makeconf
+++ b/Makeconf
@@ -1,4 +1,4 @@
-TARGETS := libemu.a vgbc vgbc.test vgbc.inspect
+TARGETS := libemu.a vgbc vgbc.test vgbc.inspect vgbc.gbdif
 
 cmd_libemu.a = ar -rc $@ $^
 verb_libemu.a = pack
@@ -26,4 +26,8 @@ $(objects_vgbc.test): CXX_FLAGS+=-I $(CURDIR)/tests
 modules_vgbc.inspect := cartridge/inspector.o libemu.a
 verb_vgbc.inspect := link
 
+# Game Boy Doctor Interface
+modules_vgbc.gbdif := misc/gbdif.o libemu.a
+verb_vgbc.gbdif := link
+
 CXX_FLAGS := -I $(CURDIR)
diff --git a/main.cpp b/misc/gbdif.cpp
similarity index 100%
rename from main.cpp
rename to misc/gbdif.cpp