diff --git a/examples/android/app/build.gradle b/examples/android/app/build.gradle
index b1fb031b5..935dce939 100644
--- a/examples/android/app/build.gradle
+++ b/examples/android/app/build.gradle
@@ -11,7 +11,7 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
             ndkBuild {
-                // cppFlags "-std=c++14 -frtti -fexceptions"
+                cppFlags "-std=c++17"
             }
 
         }
diff --git a/include/SFML/System/Clock.hpp b/include/SFML/System/Clock.hpp
index 3ae671177..0ee4d9dc0 100644
--- a/include/SFML/System/Clock.hpp
+++ b/include/SFML/System/Clock.hpp
@@ -136,7 +136,7 @@ private:
     /// \return Time instance
     ///
     ////////////////////////////////////////////////////////////
-    static Time durationToTime(ClockImpl::duration duration);
+    [[nodiscard]] static Time durationToTime(ClockImpl::duration duration);
 
     ////////////////////////////////////////////////////////////
     // Member data