diff --git a/src/newgrf_class.h b/src/newgrf_class.h
--- a/src/newgrf_class.h
+++ b/src/newgrf_class.h
@@ -24,8 +24,8 @@ private:
 
 	/**
 	 * The actual classes.
-	 * @note We store pointers to membes of this array in various places outside this class (e.g. to 'name' for GRF string resolving).
-	 *       Thus this must be a static array, and cannot be a self-resizing SmallVector or similar.
+	 * @note We store pointers to members of this array in various places outside this class (e.g. to 'name' for GRF string resolving).
+	 *       Thus this must be a static array, and cannot be a self-resizing vector or similar.
 	 */
 	static NewGRFClass<Tspec, Tid, Tmax> classes[Tmax];
 
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -719,7 +719,7 @@ CommandCost CmdBuildTunnel(TileIndex sta
 
 		/* CMD_TERRAFORM_LAND may append further items to _cleared_object_areas,
 		 * however it will never erase or re-order existing items.
-		 * _cleared_object_areas is a value-type SmallVector, therefore appending items
+		 * _cleared_object_areas is a value-type self-resizing vector, therefore appending items
 		 * may result in a backing-store re-allocation, which would invalidate the coa pointer.
 		 * The index of the coa pointer into the _cleared_object_areas vector remains valid,
 		 * and can be used safely after the CMD_TERRAFORM_LAND operation.