diff --git a/src/StabilityCheck.jl b/src/StabilityCheck.jl
index 047a5d7e7..b0620e6ff 100644
--- a/src/StabilityCheck.jl
+++ b/src/StabilityCheck.jl
@@ -100,7 +100,7 @@ is_stable_module_aux(mod::Module, root::Module, seen::Set{Module}, scfg::SearchC
                 showerror(stdout, e)
                 # not our problem, so proceed as usual
             elseif e isa CantSplitMethod
-                @warn "Can't process method with no canonical instance:\n$m"
+                @warn "Can't process method with no canonical instance:\n"
                 # cf. comment in `split_method`
             else
                 throw(e)