diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2fedb35..0503114 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,9 @@ cmake_minimum_required(VERSION 2.8.9)
 project (saland)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${saland_SOURCE_DIR}/src/cmake")
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -std=c++11 -g")
+# -Wno-deprecated-declarations is needed until all supported platforms are using PhysFS 3.0.1+.
+# This will happen once Debian 10 is realeased
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wsuggest-override -Wno-deprecated-declarations -std=c++11 -g")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -g")
 
 find_package(Boost COMPONENTS program_options REQUIRED)
diff --git a/src/Libs/include/rapidxml/rapidxml.hpp b/src/Libs/include/rapidxml/rapidxml.hpp
index 6b82f20..c9fe403 100644
--- a/src/Libs/include/rapidxml/rapidxml.hpp
+++ b/src/Libs/include/rapidxml/rapidxml.hpp
@@ -82,7 +82,7 @@ namespace rapidxml
 
         //! Gets human readable description of error.
         //! \return Pointer to null terminated description of the error.
-        virtual const char *what() const throw()
+        virtual const char *what() const throw() override
         {
             return m_what;
         }
diff --git a/src/saland/console/Console.cpp b/src/saland/console/Console.cpp
index 94b7bac..ffb5c26 100644
--- a/src/saland/console/Console.cpp
+++ b/src/saland/console/Console.cpp
@@ -55,7 +55,7 @@ struct HelpConsoleCommand : public ConsoleCommand {
 		return helpMessage;
 	}
 
-	virtual std::string helpMessage() const { return "Displays this message"; }
+	virtual std::string helpMessage() const override { return "Displays this message"; }
 };
 
 static HelpConsoleCommand hcc;