diff --git a/include/openmc/particle_data.h b/include/openmc/particle_data.h
index 128685fef2..727be0ec0e 100644
--- a/include/openmc/particle_data.h
+++ b/include/openmc/particle_data.h
@@ -310,8 +310,8 @@ private:
 
   // Weight window information
   int n_split_ {0}; // Number of times this particle has been split
-  double ww_factor_ {
-    0.0}; // Particle-specific factor for on-the-fly weight window adjustment
+  // Particle-specific factor for on-the-fly weight window adjustment
+  double ww_factor_ {0.0};
 
 // DagMC state variables
 #ifdef DAGMC