diff --git a/dune/solvers/iterationsteps/blockgssteps.hh b/dune/solvers/iterationsteps/blockgssteps.hh
index 6284e018662257ce1c17fc9418ad804dadb0be58..2bbdb0ff2f16ef24b60e386325ff906e9cb3ba20 100644
--- a/dune/solvers/iterationsteps/blockgssteps.hh
+++ b/dune/solvers/iterationsteps/blockgssteps.hh
@@ -208,7 +208,7 @@ auto truncateSymmetrically(LinearSolver&& linearSolver) {
 
 namespace LocalSolverRegularizer {
 
-// a suitable value for defaultDiagRagularization could be 1e-10
+// a suitable value for defaultDiagRegularization could be 1e-10
 // nevertheless, the default is 0 to avoid unintentional regularization
 static constexpr double defaultDiagRegularizeParameter = 0;