diff --git a/src/jrd/DataTypeUtil.cpp b/src/jrd/DataTypeUtil.cpp
index b6fef634c0..581ab20135 100644
--- a/src/jrd/DataTypeUtil.cpp
+++ b/src/jrd/DataTypeUtil.cpp
@@ -172,12 +172,7 @@ void DataTypeUtilBase::makeFromList(dsc* result, const char* expressionName, int
 			if (result->isUnknown())
 				*result = *arg;
 			else if (result->dsc_dtype != arg->dsc_dtype)
-			{
-				// Datatypes @1are not comparable in expression @2
-				status_exception::raise(Arg::Gds(isc_sqlerr) << Arg::Num(-104) <<
-					Arg::Gds(isc_dsql_datatypes_not_comparable) << Arg::Str("") <<
-						Arg::Str(expressionName));
-			}
+				makeBlobOrText(result, arg, true);
 		}
 		else	// we don't support this datatype here
 		{