diff --git a/include/simple_timer/simple_timer.h b/include/simple_timer/simple_timer.h
index 8194df8..0f34671 100644
--- a/include/simple_timer/simple_timer.h
+++ b/include/simple_timer/simple_timer.h
@@ -299,12 +299,12 @@ class SimpleTimer {
       catch (const std::exception &e)
       {
         state_ = State::Stopped;
-        std::fprintf(stderr, "\n\033[1;31m[SimpleTimer] Exception: %s\033[0m\n\n", e.what());
+        static_cast<void>(std::fprintf(stderr, "\n\033[1;31m[SimpleTimer] Exception: %s\033[0m\n\n", e.what()));
       }
       catch (...)
       {
         state_ = State::Stopped;
-        std::fprintf(stderr, "\n\033[1;31m[SimpleTimer] Unknown exception occurred.\033[0m\n\n");
+        static_cast<void>(std::fprintf(stderr, "\n\033[1;31m[SimpleTimer] Unknown exception occurred.\033[0m\n\n"));
       }
       lock.lock();