1 files changed, 2 insertions, 1 deletions
diff --git a/src/mongo/s/d_migrate.cpp b/src/mongo/s/d_migrate.cpp
index c44d207dd9c..0381eccd9af 100644
--- a/src/mongo/s/d_migrate.cpp
+++ b/src/mongo/s/d_migrate.cpp
@@ -1092,7 +1092,8 @@ namespace mongo {
             // Track last result from TO shard for sanity check
             BSONObj res;
             for ( int i=0; i<86400; i++ ) { // don't want a single chunk move to take more than a day
-                verify(!txn->lockState()->threadState());
+                invariant(!txn->lockState()->threadState());
+
                 // Exponential sleep backoff, up to 1024ms. Don't sleep much on the first few
                 // iterations, since we want empty chunk migrations to be fast.
                 sleepmillis( 1 << std::min( i , 10 ) );