diff --git a/core/modules/block/tests/modules/block_test/config/block.block.stark.test_block.yml b/core/modules/block/tests/modules/block_test/config/block.block.test_block.yml
similarity index 100%
rename from core/modules/block/tests/modules/block_test/config/block.block.stark.test_block.yml
rename to core/modules/block/tests/modules/block_test/config/block.block.test_block.yml
diff --git a/core/profiles/minimal/config/block.block.stark.admin.yml b/core/profiles/minimal/config/block.block.stark_admin.yml
similarity index 100%
rename from core/profiles/minimal/config/block.block.stark.admin.yml
rename to core/profiles/minimal/config/block.block.stark_admin.yml
diff --git a/core/profiles/minimal/config/block.block.stark.login.yml b/core/profiles/minimal/config/block.block.stark_login.yml
similarity index 100%
rename from core/profiles/minimal/config/block.block.stark.login.yml
rename to core/profiles/minimal/config/block.block.stark_login.yml
diff --git a/core/profiles/minimal/config/block.block.stark.tools.yml b/core/profiles/minimal/config/block.block.stark_tools.yml
similarity index 100%
rename from core/profiles/minimal/config/block.block.stark.tools.yml
rename to core/profiles/minimal/config/block.block.stark_tools.yml
diff --git a/core/profiles/standard/config/block.block.bartik.breadcrumbs.yml b/core/profiles/standard/config/block.block.bartik_breadcrumbs.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.breadcrumbs.yml
rename to core/profiles/standard/config/block.block.bartik_breadcrumbs.yml
diff --git a/core/profiles/standard/config/block.block.bartik.content.yml b/core/profiles/standard/config/block.block.bartik_content.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.content.yml
rename to core/profiles/standard/config/block.block.bartik_content.yml
diff --git a/core/profiles/standard/config/block.block.bartik.footer.yml b/core/profiles/standard/config/block.block.bartik_footer.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.footer.yml
rename to core/profiles/standard/config/block.block.bartik_footer.yml
diff --git a/core/profiles/standard/config/block.block.bartik.help.yml b/core/profiles/standard/config/block.block.bartik_help.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.help.yml
rename to core/profiles/standard/config/block.block.bartik_help.yml
diff --git a/core/profiles/standard/config/block.block.bartik.login.yml b/core/profiles/standard/config/block.block.bartik_login.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.login.yml
rename to core/profiles/standard/config/block.block.bartik_login.yml
diff --git a/core/profiles/standard/config/block.block.bartik.powered.yml b/core/profiles/standard/config/block.block.bartik_powered.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.powered.yml
rename to core/profiles/standard/config/block.block.bartik_powered.yml
diff --git a/core/profiles/standard/config/block.block.bartik.search.yml b/core/profiles/standard/config/block.block.bartik_search.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.search.yml
rename to core/profiles/standard/config/block.block.bartik_search.yml
diff --git a/core/profiles/standard/config/block.block.bartik.tools.yml b/core/profiles/standard/config/block.block.bartik_tools.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.bartik.tools.yml
rename to core/profiles/standard/config/block.block.bartik_tools.yml
diff --git a/core/profiles/standard/config/block.block.seven.breadcrumbs.yml b/core/profiles/standard/config/block.block.seven_breadcrumbs.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.seven.breadcrumbs.yml
rename to core/profiles/standard/config/block.block.seven_breadcrumbs.yml
diff --git a/core/profiles/standard/config/block.block.seven.content.yml b/core/profiles/standard/config/block.block.seven_content.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.seven.content.yml
rename to core/profiles/standard/config/block.block.seven_content.yml
diff --git a/core/profiles/standard/config/block.block.seven.help.yml b/core/profiles/standard/config/block.block.seven_help.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.seven.help.yml
rename to core/profiles/standard/config/block.block.seven_help.yml
diff --git a/core/profiles/standard/config/block.block.seven.login.yml b/core/profiles/standard/config/block.block.seven_login.yml
similarity index 100%
rename from core/profiles/standard/config/block.block.seven.login.yml
rename to core/profiles/standard/config/block.block.seven_login.yml