diff --git a/include/openthread/platform/toolchain.h b/include/openthread/platform/toolchain.h
index ca92b7056..9d1db9322 100644
--- a/include/openthread/platform/toolchain.h
+++ b/include/openthread/platform/toolchain.h
@@ -99,20 +99,6 @@ extern "C" {
  *
  */
 
-/**
- * @def OT_CALL
- *
- * Compiler-specific function modifier, ie: Win DLL support
- *
- */
-
-/**
- * @def OT_CDECL
- *
- * Compiler-specific function modifier, ie: Win DLL support
- *
- */
-
 // =========== TOOLCHAIN SELECTION : START ===========
 
 #if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM) || defined(__TI_ARM__)