diff --git a/Libretro/Makefile.common b/Libretro/Makefile.common
index 1a3b0514..220015af 100644
--- a/Libretro/Makefile.common
+++ b/Libretro/Makefile.common
@@ -78,6 +78,7 @@ SOURCES_CXX := $(LIBRETRO_DIR)/libretro.cpp \
                $(CORE_DIR)/NtscFilter.cpp \
                $(CORE_DIR)/OggMixer.cpp \
                $(CORE_DIR)/OggReader.cpp \
+               $(CORE_DIR)/OpenBusHandler.cpp \
                $(CORE_DIR)/PPU.cpp \
                $(CORE_DIR)/Profiler.cpp \
                $(CORE_DIR)/RecordedRomTest.cpp \