diff --git a/stepmania/src/Makefile.am b/stepmania/src/Makefile.am
index 1a172311d3..51d85fed59 100644
--- a/stepmania/src/Makefile.am
+++ b/stepmania/src/Makefile.am
@@ -113,7 +113,8 @@ Lights = arch/Lights/LightsDriver.h \
 		arch/Lights/LightsDriver_SystemMessage.cpp arch/Lights/LightsDriver_SystemMessage.h
 
 MemoryCard = arch/MemoryCard/MemoryCardDriver.h \
-		arch/MemoryCard/MemoryCardDriverThreaded_Linux.cpp arch/MemoryCard/MemoryCardDriverThreaded_Linux.h 
+	     arch/MemoryCard/MemoryCardDriverThreaded.cpp arch/MemoryCard/MemoryCardDriverThreaded.h \
+	     arch/MemoryCard/MemoryCardDriverThreaded_Linux.cpp arch/MemoryCard/MemoryCardDriverThreaded_Linux.h 
 
 LowLevelWindow = arch/LowLevelWindow/LowLevelWindow.h \
 		arch/LowLevelWindow/LowLevelWindow_SDL.cpp arch/LowLevelWindow/LowLevelWindow_SDL.h