diff --git a/debug_test/fokker_planck_collisions_tests.jl b/debug_test/fokker_planck_collisions_tests.jl
index 502e987f8..5fd838da8 100644
--- a/debug_test/fokker_planck_collisions_tests.jl
+++ b/debug_test/fokker_planck_collisions_tests.jl
@@ -1,6 +1,6 @@
 module FokkerPlanckCollisionsDebug
 
-# Debug test using wall boundary conditions.
+# Debug test using Fokker-Planck collision operator
 
 include("setup.jl")