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-rw-r--r--src/mongo/db/pipeline/pipeline_d.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/pipeline_d.cpp b/src/mongo/db/pipeline/pipeline_d.cpp
index 21c075ba1c6..b11e0ede71e 100644
--- a/src/mongo/db/pipeline/pipeline_d.cpp
+++ b/src/mongo/db/pipeline/pipeline_d.cpp
@@ -47,6 +47,7 @@ namespace mongo {
using boost::intrusive_ptr;
using boost::shared_ptr;
+ using std::string;
namespace {
class MongodImplementation : public DocumentSourceNeedsMongod::MongodInterface {