diff --git a/doc/build/snippets/writing.rst b/doc/build/snippets/writing.rst
index 66101e8e2b63..5a60a7e73836 100644
--- a/doc/build/snippets/writing.rst
+++ b/doc/build/snippets/writing.rst
@@ -28,8 +28,8 @@ this:
 
    name: foo
    append:
-     DTC_OVERLAY_FILE: foo.overlay
-     OVERLAY_CONFIG: foo.conf
+     EXTRA_DTC_OVERLAY_FILE: foo.overlay
+     EXTRA_CONF_FILE: foo.conf
 
 Namespacing
 ***********
@@ -113,7 +113,7 @@ This :file:`snippet.yml` adds :file:`foo.overlay` to the build:
 
    name: foo
    append:
-     DTC_OVERLAY_FILE: foo.overlay
+     EXTRA_DTC_OVERLAY_FILE: foo.overlay
 
 The path to :file:`foo.overlay` is relative to the directory containing
 :file:`snippet.yml`.
@@ -129,7 +129,7 @@ This :file:`snippet.yml` adds :file:`foo.conf` to the build:
 
    name: foo
    append:
-     OVERLAY_CONFIG: foo.conf
+     EXTRA_CONF_FILE: foo.conf
 
 The path to :file:`foo.conf` is relative to the directory containing
 :file:`snippet.yml`.
@@ -154,10 +154,10 @@ By name
    boards:
      bar: # settings for board "bar" go here
        append:
-         DTC_OVERLAY_FILE: bar.overlay
+         EXTRA_DTC_OVERLAY_FILE: bar.overlay
      baz: # settings for board "baz" go here
        append:
-         DTC_OVERLAY_FILE: baz.overlay
+         EXTRA_DTC_OVERLAY_FILE: baz.overlay
 
 The above example uses :file:`bar.overlay` when building for board ``bar``, and
 :file:`baz.overlay` when building for ``baz``.
@@ -180,7 +180,7 @@ For example:
    boards:
      /my_vendor_.*/:
        append:
-         DTC_OVERLAY_FILE: my_vendor.overlay
+         EXTRA_DTC_OVERLAY_FILE: my_vendor.overlay
 
 The above example uses devicetree overlay :file:`my_vendor.overlay` when
 building for either board ``my_vendor_board1`` or ``my_vendor_board2``. It
diff --git a/scripts/schemas/snippet-schema.yml b/scripts/schemas/snippet-schema.yml
index d6c46d543238..64cebaedc7c2 100644
--- a/scripts/schemas/snippet-schema.yml
+++ b/scripts/schemas/snippet-schema.yml
@@ -9,9 +9,9 @@ schema;append-schema:
   # See uses under 'append:' keys below.
   type: map
   mapping:
-    DTC_OVERLAY_FILE:
+    EXTRA_DTC_OVERLAY_FILE:
       type: str
-    OVERLAY_CONFIG:
+    EXTRA_CONF_FILE:
       type: str
 
 type: map
diff --git a/scripts/snippets.py b/scripts/snippets.py
index 2158613a1490..74e7ebbbfcea 100644
--- a/scripts/snippets.py
+++ b/scripts/snippets.py
@@ -52,7 +52,7 @@ def process_data(self, pathobj: Path, snippet_data: dict):
         '''Process the data in a snippet.yml file, after it is loaded into a
         python object and validated by pykwalify.'''
         def append_value(variable, value):
-            if variable in ('DTC_OVERLAY_FILE', 'OVERLAY_CONFIG'):
+            if variable in ('EXTRA_DTC_OVERLAY_FILE', 'EXTRA_CONF_FILE'):
                 path = pathobj.parent / value
                 if not path.is_file():
                     _err(f'snippet file {pathobj}: {variable}: file not found: {path}')
diff --git a/snippets/cdc-acm-console/snippet.yml b/snippets/cdc-acm-console/snippet.yml
index eab58a30a40e..98ff05bc14a7 100644
--- a/snippets/cdc-acm-console/snippet.yml
+++ b/snippets/cdc-acm-console/snippet.yml
@@ -1,4 +1,4 @@
 name: cdc-acm-console
 append:
-  OVERLAY_CONFIG: cdc-acm-console.conf
-  DTC_OVERLAY_FILE: cdc-acm-console.overlay
+  EXTRA_CONF_FILE: cdc-acm-console.conf
+  EXTRA_DTC_OVERLAY_FILE: cdc-acm-console.overlay
diff --git a/tests/cmake/snippets/extra_snippet_root/snippets/bar/snippet.yml b/tests/cmake/snippets/extra_snippet_root/snippets/bar/snippet.yml
index 914371337791..607ad57a2c0b 100644
--- a/tests/cmake/snippets/extra_snippet_root/snippets/bar/snippet.yml
+++ b/tests/cmake/snippets/extra_snippet_root/snippets/bar/snippet.yml
@@ -1,3 +1,3 @@
 name: bar
 append:
-  DTC_OVERLAY_FILE: bar.overlay
+  EXTRA_DTC_OVERLAY_FILE: bar.overlay
diff --git a/tests/cmake/snippets/snippets/foo/snippet.yml b/tests/cmake/snippets/snippets/foo/snippet.yml
index 22817d7ebf1b..ba39e7db108c 100644
--- a/tests/cmake/snippets/snippets/foo/snippet.yml
+++ b/tests/cmake/snippets/snippets/foo/snippet.yml
@@ -1,3 +1,3 @@
 name: foo
 append:
-  OVERLAY_CONFIG: foo.conf
+  EXTRA_CONF_FILE: foo.conf