diff --git a/ion/src/simulator/windows/Makefile b/ion/src/simulator/windows/Makefile
index ae146ee7a..560ccdcd6 100644
--- a/ion/src/simulator/windows/Makefile
+++ b/ion/src/simulator/windows/Makefile
@@ -15,7 +15,6 @@ ion_src += $(addprefix ion/src/simulator/shared/, \
   clipboard_helper.cpp \
   haptics.cpp \
   journal.cpp \
-  platform_action_modifier_ctrl.cpp \
   state_file.cpp \
   store_script.cpp \
 )