diff --git a/crates/bevy_time/src/lib.rs b/crates/bevy_time/src/lib.rs
index db39a41929..d2648e6fd8 100644
--- a/crates/bevy_time/src/lib.rs
+++ b/crates/bevy_time/src/lib.rs
@@ -160,12 +160,13 @@ pub fn time_system(
         None => None,
     };
 
-    #[cfg(not(feature = "std"))]
-    let sent_time = None;
-
     match update_strategy.as_ref() {
         TimeUpdateStrategy::Automatic => {
+            #[cfg(feature = "std")]
             real_time.update_with_instant(sent_time.unwrap_or_else(Instant::now));
+
+            #[cfg(not(feature = "std"))]
+            real_time.update_with_instant(Instant::now());
         }
         TimeUpdateStrategy::ManualInstant(instant) => real_time.update_with_instant(*instant),
         TimeUpdateStrategy::ManualDuration(duration) => real_time.update_with_duration(*duration),