diff --git a/docs/ThreadSafetyAnalysis.rst b/docs/ThreadSafetyAnalysis.rst
index 19ec2352ff2bc9b2da316ee38733d384ddf836c1..47cf4ef3994e695d67141f8591865af2b0f83ccc 100644
--- a/docs/ThreadSafetyAnalysis.rst
+++ b/docs/ThreadSafetyAnalysis.rst
@@ -764,8 +764,6 @@ implementation.
   #define THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op
   #endif
 
-  #define THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x))
-
   #define CAPABILITY(x) \
     THREAD_ANNOTATION_ATTRIBUTE__(capability(x))