diff --git a/data/variant.hh b/data/variant.hh
index d573666b..308f7320 100644
--- a/data/variant.hh
+++ b/data/variant.hh
@@ -163,7 +163,7 @@ m4_define([b4_variant_define],
     /// Both variants must be built beforehand, because swapping the actual
     /// data requires reading it (with as()), and this is not possible on
     /// unconstructed variants: it would require some dynamic testing, which
-    /// should not be the variant's responsability.
+    /// should not be the variant's responsibility.
     /// Swapping between built and (possibly) non-built is done with
     /// variant::move ().
     template <typename T>