1 files changed, 0 insertions, 1 deletions
diff --git a/extractor/grammar_extractor.h b/extractor/grammar_extractor.h
index eb79f53c..0f3069b0 100644
--- a/extractor/grammar_extractor.h
+++ b/extractor/grammar_extractor.h
@@ -15,7 +15,6 @@ class DataArray;
 class Grammar;
 class HieroCachingRuleFactory;
 class Precomputation;
-class Rule;
 class Scorer;
 class SuffixArray;
 class Vocabulary;