diff --git a/src/particle.cpp b/src/particle.cpp
index 4453701be4..c94c46ea33 100644
--- a/src/particle.cpp
+++ b/src/particle.cpp
@@ -416,6 +416,10 @@ Particle::cross_surface()
   // Handle any applicable boundary conditions.
   if (surf->bc_ && settings::run_mode != RunMode::PLOTTING) {
     surf->bc_->handle_particle(*this, *surf);
+
+    if (surf->surf_src_) {
+      write_message("    Source banking on surface " + std::to_string(surf->id_));
+    }
     return;
   }