diff --git a/src/parser/parser.jl b/src/parser/parser.jl
index ed13f3a..f2194aa 100644
--- a/src/parser/parser.jl
+++ b/src/parser/parser.jl
@@ -8,7 +8,7 @@ end
 function Base.showerror(io::IO, e::TeXParseError)
     println(io, "TeXParseError: ",  e.msg)
     show_state(io, e.stack, e.position, e.tex)
-    show_tokenization(io, tex)
+    show_tokenization(io, e.tex)
 end
 
 function show_tokenization(io, tex)
diff --git a/test/parser.jl b/test/parser.jl
index 6370ec3..19c59a0 100644
--- a/test/parser.jl
+++ b/test/parser.jl
@@ -20,6 +20,10 @@ end
         )
     end
 
+    @testset "Showing errors" begin
+        @test_throws "tokenized as" texparse("{")
+    end
+
     @testset "Delimiter" begin
         expr = texparse(L"\left(\frac{x}{y}\right)")
         delimited = expr.args[1].args[1]