diff --git a/library/constant_time_internal.h b/library/constant_time_internal.h
index a8518b4..fc24ae5 100644
--- a/library/constant_time_internal.h
+++ b/library/constant_time_internal.h
@@ -137,7 +137,7 @@
  *                 with the same allocated length as \p B.
  * \param B        The right-hand MPI. This must point to an array of limbs
  *                 with the same allocated length as \p A.
- * \param limbs     The number of limbs in \p A and \p B.
+ * \param limbs    The number of limbs in \p A and \p B.
  *
  * \return         The result of the comparison:
  *                 \c 1 if \p A is less than \p B.