diff --git a/test/dsp.jl b/test/dsp.jl
index 02dd6f546..fb7dc00aa 100644
--- a/test/dsp.jl
+++ b/test/dsp.jl
@@ -68,8 +68,8 @@ end
         a = [1, 2]
         b = [3, 4]
         c = [1 2; 3 4]
-        @test_warn conv(a, b, c)
         @test conv(a, b, c) == conv(conv(a, b), c)
+        @test_warn "seperable" conv(a, b, c)
     end
 
     @testset "conv-2D" begin