diff --git a/src/CEnum.jl b/src/CEnum.jl
index b8d6a04..ca6f8a8 100644
--- a/src/CEnum.jl
+++ b/src/CEnum.jl
@@ -29,7 +29,7 @@ Base.print(io::IO, x::Cenum) = print(io, Symbol(x))
 
 function Base.show(io::IO, x::Cenum)
     sym = Symbol(x)
-    if !get(io, :compact, false)
+    if !get(io, :compact, false)::Bool
         from = get(io, :module, Main)
         def = typeof(x).name.module
         if from === nothing || !Base.isvisible(sym, def, from)