diff --git a/rpcs3/Emu/RSX/GL/GLGSRender.h b/rpcs3/Emu/RSX/GL/GLGSRender.h
index 1bdcaf427c..6aab3443be 100644
--- a/rpcs3/Emu/RSX/GL/GLGSRender.h
+++ b/rpcs3/Emu/RSX/GL/GLGSRender.h
@@ -98,7 +98,7 @@ struct driver_state
 		return !!test;
 	}
 
-	const bool test_property(GLenum property, u32 test) const
+	inline bool test_property(GLenum property, u32 test) const
 	{
 		auto found = properties.find(property);
 		if (found == properties.end())