diff --git a/server/server.cpp b/server/server.cpp
index dd1a900..ebfef93 100644
--- a/server/server.cpp
+++ b/server/server.cpp
@@ -526,9 +526,7 @@ void update_world(net::steady_timer& timer, net::io_context& ioc) {
 					if (!session->fetchStateAtTime(now, targetState)) continue;
 
 					Eigen::Vector3f diff = pr.pos - targetState.position;
-					const float shipRadius = 15.0f;
-					const float projectileRadius = 1.5f;
-					float combinedRadius = shipRadius + projectileRadius;
+					float combinedRadius = shipCollisionRadius + projectileHitRadius;
 
 					if (diff.squaredNorm() <= combinedRadius * combinedRadius) {
 						DeathInfo death;