diff --git a/clickhouse_sqlalchemy/drivers/compilers/typecompiler.py b/clickhouse_sqlalchemy/drivers/compilers/typecompiler.py
index 26647841..d8faa26c 100644
--- a/clickhouse_sqlalchemy/drivers/compilers/typecompiler.py
+++ b/clickhouse_sqlalchemy/drivers/compilers/typecompiler.py
@@ -131,3 +131,13 @@ def visit_map(self, type_, **kw):
             self.process(key_type, **kw),
             self.process(value_type, **kw)
         )
+
+    # TODO: Ensure that we can autogenerate with it...then open a pull request.
+
+    def visit_aggregatefunction(self, type_):
+        print(type_.agg_name)
+        print(type_.nested_type)
+        return "AggregateFunction(%s, %s)" % (
+            type_.agg_name,
+            self.process(value_type, **kw)
+        )
diff --git a/clickhouse_sqlalchemy/types/__init__.py b/clickhouse_sqlalchemy/types/__init__.py
index 502e8a0f..8c95de04 100644
--- a/clickhouse_sqlalchemy/types/__init__.py
+++ b/clickhouse_sqlalchemy/types/__init__.py
@@ -33,6 +33,7 @@
     'Nested',
     'Tuple',
     'Map',
+    'AggregateFunction',
 ]
 
 from .common import String
diff --git a/clickhouse_sqlalchemy/types/common.py b/clickhouse_sqlalchemy/types/common.py
index 947a8708..432a9d23 100644
--- a/clickhouse_sqlalchemy/types/common.py
+++ b/clickhouse_sqlalchemy/types/common.py
@@ -188,3 +188,12 @@ def __init__(self, key_type, value_type):
         self.key_type = key_type
         self.value_type = value_type
         super(Map, self).__init__()
+
+
+class AggregateFunction(ClickHouseTypeEngine):
+    __visit_name__ = 'aggregatefunction'
+
+    def __init__(self, agg_name, nested_type):
+        self.agg_name = agg_name
+        self.nested_type = to_instance(nested_type)
+        super(AggregateFunction, self).__init__()