diff --git a/stepmania/src/Makefile.am b/stepmania/src/Makefile.am
index a6d3ea699e..e8c610c13c 100644
--- a/stepmania/src/Makefile.am
+++ b/stepmania/src/Makefile.am
@@ -74,7 +74,7 @@ MenuTimer.cpp MenuTimer.h MusicBannerWheel.cpp MusicBannerWheel.h MusicList.cpp
 MusicSortDisplay.h MusicWheel.cpp MusicWheel.h MusicWheelItem.cpp MusicWheelItem.h OptionIcon.cpp OptionIcon.h \
 OptionIconRow.cpp OptionIconRow.h OptionsCursor.cpp OptionsCursor.h ScrollBar.cpp ScrollBar.h ScrollingList.cpp \
 ScrollingList.h SmallGradeDisplay.cpp SmallGradeDisplay.h SnapDisplay.cpp SnapDisplay.h TextBanner.cpp TextBanner.h \
-WheelNotifyIcon.cpp WheelNotifyIcon.h
+HelpDisplay.cpp HelpDisplay.h WheelNotifyIcon.cpp WheelNotifyIcon.h
 
 ActorsInGameplay = \
 ArrowEffects.cpp ArrowEffects.h Background.cpp Background.h BGAnimation.cpp BGAnimation.h BGAnimationLayer.cpp \