diff --git a/api/opencl_runtime_layer.asciidoc b/api/opencl_runtime_layer.asciidoc
index 69a650c38..5c9804a0a 100644
--- a/api/opencl_runtime_layer.asciidoc
+++ b/api/opencl_runtime_layer.asciidoc
@@ -13842,6 +13842,8 @@ _sema_object_ and re-creating it with the original _sema_props_ from
 be imported.
 The semaphore _sema_object_ must have originally imported an external handle
 of type {CL_SEMAPHORE_HANDLE_SYNC_FD_KHR}.
+Calling {clReImportSemaphoreSyncFdKHR} when the last operation performed on
+_sema_object_ was not a wait will result in undefined behavior.
 
 // refError