1 files changed, 2 insertions, 2 deletions
diff --git a/lib/coderay/scanner.rb b/lib/coderay/scanner.rb
index a28f70f..831fc39 100644
--- a/lib/coderay/scanner.rb
+++ b/lib/coderay/scanner.rb
@@ -233,8 +233,8 @@ surrounding code:
           tokens.last(10).map { |t| t.inspect }.join("\n"),
           line, pos,
           matched, state, bol?, eos?,
-          string[pos-ambit,ambit],
-          string[pos,ambit],
+          string[pos - ambit, ambit],
+          string[pos, ambit],
         ]
       end