diff --git a/deps/nostalgia/src/olympic/turbine/src/CMakeLists.txt b/deps/nostalgia/src/olympic/turbine/src/CMakeLists.txt
index c8b08b8..33a7d92 100644
--- a/deps/nostalgia/src/olympic/turbine/src/CMakeLists.txt
+++ b/deps/nostalgia/src/olympic/turbine/src/CMakeLists.txt
@@ -19,7 +19,7 @@ target_include_directories(
 )
 
 target_sources(
-	Turbine PUBLIC
+	Turbine PRIVATE
 		turbine.cpp
 )