diff --git a/src/particle.cpp b/src/particle.cpp
index e078600e72..e63c32eb66 100644
--- a/src/particle.cpp
+++ b/src/particle.cpp
@@ -891,8 +891,8 @@ void Particle::write_restart() const
     return;
 
   // Set up file name
-  auto filename = fmt::format("{}particle_{}_{}.h5",
-    settings::path_output, simulation::current_batch, id());
+  auto filename = fmt::format("{}particle_{}_{}.h5", settings::path_output,
+    simulation::current_batch, id());
 
 #pragma omp critical(WriteParticleRestart)
   {