diff --git a/src/engine.c b/src/engine.c
index 8b63ab2..8a5d514 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -13,7 +13,7 @@ static struct timespec start_last_frame;
 
 inline static
 double timespec_to_sec(struct timespec spec) {
-	return spec.tv_sec + spec.tv_nsec * 1E-09f;
+	return (double)spec.tv_sec + (double)spec.tv_nsec * 1E-09;
 }
 
 inline float delta_time() {