diff --git a/include/world_builder/features/fault_models/composition/smooth.h b/include/world_builder/features/fault_models/composition/smooth.h
index f61b2c4d4..d741007d8 100644
--- a/include/world_builder/features/fault_models/composition/smooth.h
+++ b/include/world_builder/features/fault_models/composition/smooth.h
@@ -83,7 +83,7 @@ namespace WorldBuilder
             double min_distance;
             double side_distance;
             std::vector<double> center_fraction;
-            // currently not using the side composition, but maybe usefu if you want another composition towards the end
+            // currently not using the side composition, but maybe useful if you want another composition towards the end
             std::vector<double> side_fraction;
             std::vector<unsigned int> compositions;
             Operations operation;
diff --git a/include/world_builder/utilities.h b/include/world_builder/utilities.h
index a20019ae7..ff7ae6082 100644
--- a/include/world_builder/utilities.h
+++ b/include/world_builder/utilities.h
@@ -261,7 +261,7 @@ namespace WorldBuilder
      * meshed by a grid. The axis parallel to the surface are formed by
      * sections, and the axis perpendicuar to the surface are formed segments.
      * Both sections and elements represent a whole cell in the grid, which is
-     * an inteter. This structure also provides the fraction in each direction
+     * an integer. This structure also provides the fraction in each direction
      * the closest point on the plane is along these two axes (sections and
      * segments). These variables are called fractions.
      *