diff --git a/spec/propane/lexer/dfa_spec.rb b/spec/propane/lexer/dfa_spec.rb
index afa7903..bb8b177 100644
--- a/spec/propane/lexer/dfa_spec.rb
+++ b/spec/propane/lexer/dfa_spec.rb
@@ -116,6 +116,15 @@ EOF
 token foo;
 token bar;
 drop \\s+;
+EOF
+  end
+
+  it "matches a semicolon" do
+    expected = [
+      ["semicolon", ";"],
+    ]
+    expect(run(<<EOF, ";")).to eq expected
+token semicolon \;;
 EOF
   end
 end