diff --git a/sycl/doc/extensions/supported/sycl_ext_oneapi_bfloat16.asciidoc b/sycl/doc/extensions/supported/sycl_ext_oneapi_bfloat16.asciidoc
index bae11769da941..df4c5a5901ac0 100644
--- a/sycl/doc/extensions/supported/sycl_ext_oneapi_bfloat16.asciidoc
+++ b/sycl/doc/extensions/supported/sycl_ext_oneapi_bfloat16.asciidoc
@@ -91,6 +91,24 @@ in software.
 
 == Specification
 
+=== Feature test macro
+
+This extension provides a feature-test macro as described in the core SYCL
+specification.  An implementation supporting this extension must predefine the
+macro `SYCL_EXT_ONEAPI_BFLOAT16` to one of the values defined in the table
+below.  Applications can test for the existence of this macro to determine if
+the implementation supports this feature, or applications can test the macro's
+value to determine which of the extension's features the implementation
+supports.
+
+[%header,cols="1,5"]
+|===
+|Value
+|Description
+
+|1
+|Initial version of this extension.
+|===
 
 === New `bfloat16` class
 
diff --git a/sycl/source/feature_test.hpp.in b/sycl/source/feature_test.hpp.in
index 1e26cf0b8a23e..5b5cab4e0fc48 100644
--- a/sycl/source/feature_test.hpp.in
+++ b/sycl/source/feature_test.hpp.in
@@ -56,6 +56,7 @@ inline namespace _V1 {
 #define SYCL_EXT_ONEAPI_SUB_GROUP 1
 #define SYCL_EXT_ONEAPI_PROPERTIES 1
 #define SYCL_EXT_ONEAPI_NATIVE_MATH 1
+#define SYCL_EXT_ONEAPI_BFLOAT16 1
 #define SYCL_EXT_ONEAPI_BFLOAT16_MATH_FUNCTIONS 1
 #define SYCL_EXT_ONEAPI_COMPOSITE_DEVICE 1
 #define SYCL_EXT_INTEL_DATAFLOW_PIPES 1