diff --git a/desktop_version/CMakeLists.txt b/desktop_version/CMakeLists.txt
index 0e9e5f4a..c40273e1 100644
--- a/desktop_version/CMakeLists.txt
+++ b/desktop_version/CMakeLists.txt
@@ -275,7 +275,7 @@ endif()
 # SDL2 Dependency (Detection pulled from FAudio)
 if(DEFINED SDL2_INCLUDE_DIRS AND DEFINED SDL2_LIBRARIES)
 	message(STATUS "Using pre-defined SDL2 variables SDL2_INCLUDE_DIRS and SDL2_LIBRARIES")
-	target_include_directories(VVVVVV SYSTEM PUBLIC "$<BUILD_INTERFACE:${SDL2_INCLUDE_DIRS}>")
+	target_include_directories(VVVVVV SYSTEM PRIVATE "$<BUILD_INTERFACE:${SDL2_INCLUDE_DIRS}>")
 	target_link_libraries(VVVVVV ${SDL2_LIBRARIES})
 else()
 	# Only try to autodetect if both SDL2 variables aren't explicitly set
@@ -289,7 +289,7 @@ else()
 	else()
 		message(STATUS "No TARGET SDL2::SDL2, or SDL2, using variables")
 		find_path(SDL2_MIXER_INCLUDE_DIRS NAMES SDL_mixer.h PATH_SUFFIXES SDL2)
-		target_include_directories(VVVVVV SYSTEM PUBLIC "$<BUILD_INTERFACE:${SDL2_INCLUDE_DIRS}>" ${SDL2_MIXER_INCLUDE_DIRS})
+		target_include_directories(VVVVVV SYSTEM PRIVATE "$<BUILD_INTERFACE:${SDL2_INCLUDE_DIRS}>" ${SDL2_MIXER_INCLUDE_DIRS})
 		target_link_libraries(VVVVVV ${SDL2_LIBRARIES} SDL2_mixer)
 	endif()
 endif()