diff --git a/stepmania/src/Makefile.am b/stepmania/src/Makefile.am
index 2e8d82bb32..4442fe1cbc 100644
--- a/stepmania/src/Makefile.am
+++ b/stepmania/src/Makefile.am
@@ -157,7 +157,7 @@ if HAVE_GTK
 LoadingWindow += arch/LoadingWindow/LoadingWindow_Gtk.cpp arch/LoadingWindow/LoadingWindow_Gtk.h
 endif
 
-Sound = arch/Sound/RageSoundDriver.h \
+Sound = arch/Sound/RageSoundDriver.h arch/Sound/RageSoundDriver.cpp \
 	arch/Sound/RageSoundDriver_Null.cpp arch/Sound/RageSoundDriver_Null.h \
 	arch/Sound/RageSoundDriver_Generic_Software.cpp arch/Sound/RageSoundDriver_Generic_Software.h
 
@@ -203,7 +203,7 @@ LowLevelWindow = arch/LowLevelWindow/LowLevelWindow.h
 
 ArchUtils =
 
-Dialog = arch/Dialog/Dialog.cpp arch/Dialog/Dialog.h arch/Dialog/DialogDriver.h
+Dialog = arch/Dialog/Dialog.cpp arch/Dialog/Dialog.h arch/Dialog/DialogDriver.h arch/Dialog/DialogDriver.cpp
 
 Threads = arch/Threads/Threads.h