diff --git a/Source/Core/DolphinQt/CMakeLists.txt b/Source/Core/DolphinQt/CMakeLists.txt
index ec854d5d42..8ac837541d 100644
--- a/Source/Core/DolphinQt/CMakeLists.txt
+++ b/Source/Core/DolphinQt/CMakeLists.txt
@@ -369,8 +369,15 @@ if (MSVC)
   # Don't propogate warnings in qt headers to Dolphin
   target_compile_options(dolphin-emu PRIVATE /experimental:external)
   target_compile_options(dolphin-emu PRIVATE /external:W0)
-  target_compile_options(dolphin-emu PRIVATE "/external:I${Qt5Gui_PRIVATE_INCLUDE_DIRS}")
-  target_compile_options(dolphin-emu PRIVATE "/external:I${Qt5Widgets_PRIVATE_INCLUDE_DIRS}")
+  set(qtGui "")
+  set(qtGuiPriv "")
+  set(qtWidgetsPriv "")
+  list(TRANSFORM Qt5Gui_INCLUDE_DIRS PREPEND "/external:I" OUTPUT_VARIABLE qtGui)
+  list(TRANSFORM Qt5Gui_PRIVATE_INCLUDE_DIRS PREPEND "/external:I" OUTPUT_VARIABLE qtGuiPriv)
+  list(TRANSFORM Qt5Widgets_PRIVATE_INCLUDE_DIRS PREPEND "/external:I" OUTPUT_VARIABLE qtWidgetsPriv)
+  target_compile_options(dolphin-emu PRIVATE "${qtGui}")
+  target_compile_options(dolphin-emu PRIVATE "${qtGuiPriv}")
+  target_compile_options(dolphin-emu PRIVATE "${qtWidgets}")
 endif()
 
 if(WIN32)