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-rw-r--r--engine.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/engine.rb b/engine.rb
index 638a80e..b04e2f2 100644
--- a/engine.rb
+++ b/engine.rb
@@ -38,7 +38,7 @@ class Engine
def state_h
hash = state_to_hash
- hash[:checksum] = checksum hash
+ hash['checksum'] = checksum hash
hash
end