diff --git a/core/profiles/standard/config/install/block.block.bartik_content.yml b/core/profiles/standard/config/install/block.block.bartik_content.yml
index b1e0c80..d4decf6 100644
--- a/core/profiles/standard/config/install/block.block.bartik_content.yml
+++ b/core/profiles/standard/config/install/block.block.bartik_content.yml
@@ -16,4 +16,6 @@ settings:
   label: 'Main page content'
   provider: system
   label_display: '0'
+  context_mapping:
+    main_content_context: '@block.main_content_context:main_content_context'
 visibility: {  }
diff --git a/core/profiles/standard/config/install/block.block.seven_content.yml b/core/profiles/standard/config/install/block.block.seven_content.yml
index d92214c..024bcec 100644
--- a/core/profiles/standard/config/install/block.block.seven_content.yml
+++ b/core/profiles/standard/config/install/block.block.seven_content.yml
@@ -16,4 +16,6 @@ settings:
   label: 'Main page content'
   provider: system
   label_display: '0'
+  context_mapping:
+    main_content_context: '@block.main_content_context:main_content_context'
 visibility: {  }