diff --git a/doc/src/manual/parallel-computing.md b/doc/src/manual/parallel-computing.md
index 58bdaf9f72de0..76bb41af49448 100644
--- a/doc/src/manual/parallel-computing.md
+++ b/doc/src/manual/parallel-computing.md
@@ -1580,6 +1580,8 @@ by using [`randjump`](@ref) function:
 
 
 ```julia-repl
+julia> using Random
+
 julia> function g_fix(r)
            a = zeros(1000)
            @threads for i in 1:1000