diff --git a/crates/oa-desktop/src/app/scenario_spacing/group_tests.rs b/crates/oa-desktop/src/app/scenario_spacing/group_tests.rs
index 0f3e6030..c7028b29 100644
--- a/crates/oa-desktop/src/app/scenario_spacing/group_tests.rs
+++ b/crates/oa-desktop/src/app/scenario_spacing/group_tests.rs
@@ -115,7 +115,7 @@ fn either_pressed_member_moves_complete_group_and_preserves_primary_source_and_o
             let mut layout = ScenarioLayout::default();
             for member in members {
                 if messages {
-                    let y = if member == ids[0] { 148. } else { 240. };
+                    let y: f32 = if member == ids[0] { 148. } else { 240. };
                     layout.messages.push(ScenarioMessagePosition {
                         address: OccurrenceEndpoint {
                             references: vec![],
@@ -124,7 +124,7 @@ fn either_pressed_member_moves_complete_group_and_preserves_primary_source_and_o
                         send_y: (f64::from(y) + f64::from(world_delta)) as f32,
                     });
                 } else {
-                    let x = if member == ids[0] { 160. } else { 400. };
+                    let x: f32 = if member == ids[0] { 160. } else { 400. };
                     layout.lanes.push(ScenarioLanePosition {
                         lifeline: member,
                         x: (f64::from(x) + f64::from(world_delta)) as f32,