diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index fe19252..5704849 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -6,6 +6,10 @@ add_library(plugin_tox_upnp SHARED
 	./plugin_tox_upnp.cpp
 )
 target_compile_features(plugin_tox_upnp PUBLIC cxx_std_17)
+set_target_properties(plugin_tox_upnp PROPERTIES
+	C_VISIBILITY_PRESET hidden
+	POSITION_INDEPENDENT_CODE ON
+)
 target_link_libraries(plugin_tox_upnp PUBLIC
 	solanaceae_tox_upnp
 	solanaceae_plugin