diff --git a/crates/bevy_time/src/time.rs b/crates/bevy_time/src/time.rs
index b8e382db5b4ad..730cf712cd99e 100644
--- a/crates/bevy_time/src/time.rs
+++ b/crates/bevy_time/src/time.rs
@@ -399,7 +399,7 @@ impl Time {
     #[inline]
     pub fn set_relative_speed_f64(&mut self, ratio: f64) {
         assert!(ratio.is_finite(), "tried to go infinitely fast");
-        assert!(ratio.is_sign_positive(), "tried to go back in time");
+        assert!(ratio >= 0.0, "tried to go back in time");
         self.relative_speed = ratio;
     }