diff --git a/Project.toml b/Project.toml
index c6aba78..96d1858 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Tricks"
 uuid = "410a4b4d-49e4-4fbc-ab6d-cb71b17b3775"
 authors = ["Frames White"]
-version = "0.1.8"
+version = "0.1.9"
 
 [compat]
 julia = "1.0"
diff --git a/src/Tricks.jl b/src/Tricks.jl
index 2f7fff1..0cd8749 100644
--- a/src/Tricks.jl
+++ b/src/Tricks.jl
@@ -100,7 +100,7 @@ function _method_table_all_edges_all_methods(f, T, world = Base.get_world_counte
 
     # We add an edge to the MethodTable itself so that when any new methods
     # are defined, it recompiles the function.
-    mt_edges = Core.Compiler.vect(mt, Tuple{Vararg{Any}})
+    mt_edges = Core.Compiler.vect(mt, Tuple{f,Vararg{Any}})
 
     # We want to add an edge to _every existing method instance_, so that
     # the deletion of any one of them will trigger recompilation of the function.
diff --git a/test/runtests.jl b/test/runtests.jl
index faae174..3b1e384 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -206,6 +206,34 @@ VERSION >= v"1.3" && @testset "static_method_count" begin
         i(x) = x+1
         @test static_method_count(i) == 1
     end
+
+    @testset "parametric struct" begin
+        struct Baz{T}; x::T end
+        @test static_method_count(Baz) == 1
+        @test static_method_count(Baz{Int}) == 1
+        @test static_method_count(Baz{Tuple}) == 1
+
+
+        Baz(x::Int) = Baz(x)
+        @test static_method_count(Baz) == 2
+        Baz{Float64}(x::Int, y::Int) = Baz(x/y)
+        @test static_method_count(Baz{Float64}) == 2
+
+        Base.delete_method((first ∘ methods)(Baz))
+        @test static_method_count(Baz) == 1
+        Base.delete_method((first ∘ methods)(Baz{Float64}))
+        @test static_method_count(Baz{Float64}) == 1
+
+        Base.delete_method((first ∘ methods)(Baz))
+        @test static_method_count(Baz) == 0
+        Base.delete_method((first ∘ methods)(Baz{Float64}))
+        @test static_method_count(Baz{Float64}) == 0
+
+        Baz(x::Int) = Baz(x)
+        @test static_method_count(Baz) == 1
+        Baz{Float64}(x::Int, y::Int) = Baz(x/y)
+        @test static_method_count(Baz{Float64}) == 1
+    end
 end
 
 VERSION >= v"1.3" && @testset "closures" begin