diff --git a/desmume/src/Makefile.am b/desmume/src/Makefile.am
index 606046038..a30e2c57d 100644
--- a/desmume/src/Makefile.am
+++ b/desmume/src/Makefile.am
@@ -1,9 +1,9 @@
 SUBDIRS = . $(UI_DIR)
 noinst_LIBRARIES = libdesmume.a
 libdesmume_a_SOURCES = \
-	ARM_CPU.cpp ARM_CPU.hpp \
+	armcpu.cpp armcpu.hpp \
 	arm_instructions.cpp arm_instructions.hpp \
-	bios.cpp bios.hpp CP15.cpp CP15.hpp \
+	bios.cpp bios.hpp cp15.cpp cp15.hpp \
 	Disassembler.cpp Disassembler.hpp \
 	GPU.cpp GPU.hpp log.cpp log.hpp \
 	MMU.cpp MMU.hpp NDSSystem.cpp NDSSystem.hpp \