diff --git a/src/LinearSolve.jl b/src/LinearSolve.jl
index c7680903b..e5673310c 100644
--- a/src/LinearSolve.jl
+++ b/src/LinearSolve.jl
@@ -140,6 +140,8 @@ end
 
 const BLASELTYPES = Union{Float32, Float64, ComplexF32, ComplexF64}
 
+function defaultalg_symbol end
+
 include("generic_lufact.jl")
 include("common.jl")
 include("extension_algs.jl")