diff --git a/Misc/NEWS.d/next/Library/2025-12-08-18-40-17.gh-issue-142438.tH-Y16.rst b/Misc/NEWS.d/next/Library/2025-12-08-18-40-17.gh-issue-142438.tH-Y16.rst
new file mode 100644
index 00000000000000..5c1db433e1b14b
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-12-08-18-40-17.gh-issue-142438.tH-Y16.rst
@@ -0,0 +1,2 @@
+Fix _decimal builds configured with EXTRA_FUNCTIONALITY by correcting the
+Context.apply wrapper to pass the right argument.
diff --git a/Modules/_decimal/_decimal.c b/Modules/_decimal/_decimal.c
index 0484d9896a1c17..2a6645c6911c6e 100644
--- a/Modules/_decimal/_decimal.c
+++ b/Modules/_decimal/_decimal.c
@@ -6990,7 +6990,7 @@ _decimal_Context_apply_impl(PyObject *context, PyTypeObject *cls,
                             PyObject *x)
 /*[clinic end generated code: output=f8a7142d47ad4ff3 input=388e66ca82733516]*/
 {
-    return _decimal_Context__apply(context, v);
+    return _decimal_Context__apply(context, x);
 }
 #endif