diff --git a/include/xo/object2/DRuntimeError.hpp b/include/xo/object2/DRuntimeError.hpp
index c59de59..8a0ae33 100644
--- a/include/xo/object2/DRuntimeError.hpp
+++ b/include/xo/object2/DRuntimeError.hpp
@@ -42,7 +42,7 @@ namespace xo {
 
             /** @defgroup scm-runtimeerror-printable-facet printable facet **/
             ///@{
-            
+
             bool pretty(const ppindentinfo & ppii) const;
 
             ///@}