diff --git a/source/filter-custom-shader.hpp b/source/filter-custom-shader.hpp
index 0e3c17fc..bd2a1d7d 100644
--- a/source/filter-custom-shader.hpp
+++ b/source/filter-custom-shader.hpp
@@ -63,7 +63,7 @@ namespace filter {
 
 			public:
 			Instance(obs_data_t*, obs_source_t*);
-			~Instance();
+			virtual ~Instance();
 
 			uint32_t get_width();
 			uint32_t get_height();
diff --git a/source/gfx-effect-source.hpp b/source/gfx-effect-source.hpp
index 873a737f..4e223456 100644
--- a/source/gfx-effect-source.hpp
+++ b/source/gfx-effect-source.hpp
@@ -146,7 +146,7 @@ namespace gfx {
 
 		public:
 		effect_source(obs_data_t* data, obs_source_t* owner);
-		~effect_source();
+		virtual ~effect_source();
 
 		void        get_properties(obs_properties_t* properties);
 		static void get_defaults(obs_data_t* data);