diff --git a/indra/llwindow/CMakeLists.txt b/indra/llwindow/CMakeLists.txt
index cdd6690e6c4c2d6cb9ec1f8f7b958a991bcd3f9c..0743fd899f2795e5a07dea6c10a5f7c432c4bc52 100644
--- a/indra/llwindow/CMakeLists.txt
+++ b/indra/llwindow/CMakeLists.txt
@@ -138,11 +138,6 @@ if (WINDOWS)
        llkeyboardwin32.cpp
        lldragdropwin32.cpp
        )
-  set_source_files_properties(
-       ${llwindow_SOURCE_FILES}
-       PROPERTIES
-       COMPILE_FLAGS "/showIncludes"
-       )
   list(APPEND llwindow_HEADER_FILES
        llwindowwin32.h
        lldxhardware.h