diff --git a/velox/functions/prestosql/BinaryFunctions.h b/velox/functions/prestosql/BinaryFunctions.h
index bba7fdd530b0..ef14e5b44b8e 100644
--- a/velox/functions/prestosql/BinaryFunctions.h
+++ b/velox/functions/prestosql/BinaryFunctions.h
@@ -338,6 +338,7 @@ struct ToBase32Function {
   }
 };
 
+template <typename T>
 struct FromBase32Function {
   VELOX_DEFINE_FUNCTION_TYPES(T);