diff --git a/src/fps_limiter.cc b/src/fps_limiter.cc
index e91040d..5c1897a 100644
--- a/src/fps_limiter.cc
+++ b/src/fps_limiter.cc
@@ -2,7 +2,7 @@
 
 #include <SDL.h>
 
-FpsLimiter::FpsLimiter(size_t fps)
+FpsLimiter::FpsLimiter(std::size_t fps)
     : _fps(fps)
     , _ticks(0)
 {
diff --git a/src/fps_limiter.h b/src/fps_limiter.h
index 1667d28..9617154 100644
--- a/src/fps_limiter.h
+++ b/src/fps_limiter.h
@@ -1,15 +1,17 @@
 #ifndef FPS_LIMITER_H
 #define FPS_LIMITER_H
 
+#include <cstddef>
+
 class FpsLimiter {
 public:
-    FpsLimiter(size_t fps = 60);
+    FpsLimiter(std::size_t fps = 60);
     void mark();
     void throttle() const;
 
 private:
-    const size_t _fps;
-    size_t _ticks;
+    const std::size_t _fps;
+    std::size_t _ticks;
 };
 
 #endif /* FPS_LIMITER_H */