diff --git a/CHANGELOG.md b/CHANGELOG.md
index eba640e..023929d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # git development version
 
-- Upgrade to Rust 1.80
+- Upgrade to Rust 1.81
 - Add "`" (backtick) key to fast-forward conversations
 - Replace all "non-free" game assets with "free" variants
 - Fix dialogs
diff --git a/Cargo.toml b/Cargo.toml
index 4498532..306907f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ repository = "https://codeberg.org/outfly/outfly"
 categories = ["game", "aerospace", "simulation"]
 keywords = ["game", "space", "3d"]
 license = "GPL-3.0-only"
-rust-version = "1.80.0"
+rust-version = "1.81.0"
 
 [dependencies]
 # For parsing the game definition file, src/data/defs.txt
diff --git a/src/cmd.rs b/src/cmd.rs
index 6482f64..d76b9e9 100644
--- a/src/cmd.rs
+++ b/src/cmd.rs
@@ -818,12 +818,6 @@ fn spawn_entities(
     settings: Res<var::Settings>,
 ) {
     for state_wrapper in er_spawn.read() {
-        let jupiter_pos: DVec3 = if let Some(jupiter_pos) = id2pos.0.get(ID_JUPITER) {
-            *jupiter_pos
-        } else {
-            warn!("Could not determine Jupiter's position");
-            DVec3::ZERO
-        };
         let state = &state_wrapper.0;
         let mut rotation = state.rotation;
 
@@ -863,8 +857,14 @@ fn spawn_entities(
                 1.0
             } * state.model_scale,
         );
-        let orbits_jupiter = state.id != ID_JUPITER;
+        let orbits_jupiter = state.has_physics && state.id != ID_JUPITER;
         let velocity = if orbits_jupiter {
+            let jupiter_pos: DVec3 = if let Some(jupiter_pos) = id2pos.0.get(ID_JUPITER) {
+                *jupiter_pos
+            } else {
+                warn!("Could not determine Jupiter's position");
+                DVec3::ZERO
+            };
             let coords = absolute_pos - jupiter_pos;
             state.velocity + nature::orbital_velocity(coords, nature::JUPITER_MASS)
         } else {