diff --git a/pymongo/asynchronous/encryption.py b/pymongo/asynchronous/encryption.py
index b302631108..662f2abd5b 100644
--- a/pymongo/asynchronous/encryption.py
+++ b/pymongo/asynchronous/encryption.py
@@ -935,7 +935,8 @@ async def _encrypt_helper(
                 contention_factor=contention_factor,
                 range_opts=range_opts_bytes,
                 is_expression=is_expression,
-                text_opts=text_opts_bytes,
+                # For compatibility with pymongocrypt < 1.16:
+                **{"text_opts": text_opts_bytes} if text_opts_bytes else {},
             )
             return decode(encrypted_doc)["v"]
 
diff --git a/pymongo/synchronous/encryption.py b/pymongo/synchronous/encryption.py
index 752026af84..518a16ff2d 100644
--- a/pymongo/synchronous/encryption.py
+++ b/pymongo/synchronous/encryption.py
@@ -928,7 +928,8 @@ def _encrypt_helper(
                 contention_factor=contention_factor,
                 range_opts=range_opts_bytes,
                 is_expression=is_expression,
-                text_opts=text_opts_bytes,
+                # For compatibility with pymongocrypt < 1.16:
+                **{"text_opts": text_opts_bytes} if text_opts_bytes else {},
             )
             return decode(encrypted_doc)["v"]