diff --git a/base/show.jl b/base/show.jl
index 09b232e54ade6..e9d1b6496713d 100644
--- a/base/show.jl
+++ b/base/show.jl
@@ -1671,7 +1671,8 @@ julia> Base.operator_associativity(:⊗), Base.operator_associativity(:sin), Bas
 """
 function operator_associativity(s::Symbol)
     if operator_precedence(s) in (prec_arrow, prec_assignment, prec_control_flow, prec_pair, prec_power) ||
-        (isunaryoperator(s) && !is_unary_and_binary_operator(s)) || s === :<| || s === :||
+        (isunaryoperator(s) && !is_unary_and_binary_operator(s)) ||
+        (s === :<| || s === :|| || s == :?)
         return :right
     elseif operator_precedence(s) in (0, prec_comparison) || s in (:+, :++, :*)
         return :none