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-rw-r--r--src/mongo/db/pipeline/expression.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mongo/db/pipeline/expression.h b/src/mongo/db/pipeline/expression.h
index 504fdc9d6e4..1b83f2651f4 100644
--- a/src/mongo/db/pipeline/expression.h
+++ b/src/mongo/db/pipeline/expression.h
@@ -367,7 +367,7 @@ namespace mongo {
class ExpressionCond : public ExpressionFixedArity<ExpressionCond, 3> {
- typedef ExpressionFixedArity Base;
+ typedef ExpressionFixedArity<ExpressionCond, 3> Base;
public:
// virtuals from ExpressionNary
virtual Value evaluateInternal(const Variables& vars) const;