diff --git a/src/jrd/execute_statement.cpp b/src/jrd/execute_statement.cpp
index c332437d3e..1ca065bf13 100644
--- a/src/jrd/execute_statement.cpp
+++ b/src/jrd/execute_statement.cpp
@@ -255,6 +255,9 @@ rec_err:
 		src.dsc_sub_type = var->sqlsubtype;
 		src.dsc_address = (UCHAR*) var->sqldata;
 
+		if ((var->sqltype & ~1) == SQL_VARYING)
+			src.dsc_length += sizeof(SSHORT);
+
 		// and assign to the target
 		EXE_assignment(tdbb, *JrdVar, &src, (var->sqltype & 1) && (*var->sqlind < 0), NULL, NULL);
 	}