diff --git a/djaosdb/sql2mongo/operators.py b/djaosdb/sql2mongo/operators.py
index 12e53e6f6cdf442497898abccd681cb76a54d24c..323e772cb8b92fe7d7d0e0946626a8f6c531f0ce 100644
--- a/djaosdb/sql2mongo/operators.py
+++ b/djaosdb/sql2mongo/operators.py
@@ -241,7 +241,11 @@ class BetweenOp(_BinaryOp):
     def negate(self):
         self.is_negated = True
 
+
     def to_mongo(self):
+        if self._lower == self._upper:
+            return {"type": "pov", "p": self._field,
+                    "o": " in ", "v": self._upper, "negation": self.is_negated}
         if not self.is_negated:
             return {
                 self._field: {
@@ -483,7 +487,8 @@ class _StatementParser:
             op = self._token2op(prev_op, tok, statement)
             if not op:
                 continue
-            if isinstance(op, (_InNotInOp, LikeOp, IsOp, NotOp, CmpOp)) and prev_op is not None and isinstance(prev_op, IsTrueOp):
+            if isinstance(op, (_InNotInOp, LikeOp, IsOp, NotOp, CmpOp,
+                               BetweenOp)) and prev_op is not None and isinstance(prev_op, IsTrueOp):
                 self._ops.remove(prev_op)
                 prev_op = prev_op.lhs
             link_op()