More commandline flag improvements

[ghc-hetmet.git] / compiler / typecheck / TcDeriv.lhs

diff --git a/compiler/typecheck/TcDeriv.lhs b/compiler/typecheck/TcDeriv.lhs
index b1a2819..6930b68 100644 (file)
--- a/compiler/typecheck/TcDeriv.lhs
+++ b/compiler/typecheck/TcDeriv.lhs
@@ -971,7 +971,7 @@ inferInstanceContexts oflag infer_specs
     iterate_deriv :: Int -> [ThetaType] -> TcM [DerivSpec]
     iterate_deriv n current_solns
       | n > 20         -- Looks as if we are in an infinite loop
-               -- This can happen if we have -fallow-undecidable-instances
+               -- This can happen if we have -XUndecidableInstances
                -- (See TcSimplify.tcSimplifyDeriv.)
       = pprPanic "solveDerivEqns: probable loop" 
                 (vcat (map pprDerivSpec infer_specs) $$ ppr current_solns)