diff --git a/rosidl_typesupport_opensplice_c/cmake/rosidl_typesupport_opensplice_c_generate_interfaces.cmake b/rosidl_typesupport_opensplice_c/cmake/rosidl_typesupport_opensplice_c_generate_interfaces.cmake
index 3f9e00a..d9ed02f 100644
--- a/rosidl_typesupport_opensplice_c/cmake/rosidl_typesupport_opensplice_c_generate_interfaces.cmake
+++ b/rosidl_typesupport_opensplice_c/cmake/rosidl_typesupport_opensplice_c_generate_interfaces.cmake
@@ -289,7 +289,8 @@ if(BUILD_TESTING AND rosidl_generate_interfaces_ADD_LINTER_TESTS)
     ament_uncrustify(
       TESTNAME "uncrustify_rosidl_typesupport_opensplice_c"
       # the generated code might contain longer lines for templated types
-      MAX_LINE_LENGTH 999
+      # set the value to zero to tell uncrustify to ignore line lengths
+      MAX_LINE_LENGTH 0
       ${_generated_files})
   endif()
 endif()
diff --git a/rosidl_typesupport_opensplice_cpp/cmake/rosidl_typesupport_opensplice_cpp_generate_interfaces.cmake b/rosidl_typesupport_opensplice_cpp/cmake/rosidl_typesupport_opensplice_cpp_generate_interfaces.cmake
index 707a633..4d60813 100644
--- a/rosidl_typesupport_opensplice_cpp/cmake/rosidl_typesupport_opensplice_cpp_generate_interfaces.cmake
+++ b/rosidl_typesupport_opensplice_cpp/cmake/rosidl_typesupport_opensplice_cpp_generate_interfaces.cmake
@@ -304,7 +304,8 @@ if(BUILD_TESTING AND rosidl_generate_interfaces_ADD_LINTER_TESTS)
     ament_uncrustify(
       TESTNAME "uncrustify_rosidl_typesupport_opensplice_cpp"
       # the generated code might contain longer lines for templated types
-      MAX_LINE_LENGTH 999
+      # set the value to zero to tell uncrustify to ignore line lengths
+      MAX_LINE_LENGTH 0
       ${_generated_files})
   endif()
 endif()