diff --git a/src/jrd/pcmet.epp b/src/jrd/pcmet.epp
index 738bbfc90a..a4220f6aa7 100644
--- a/src/jrd/pcmet.epp
+++ b/src/jrd/pcmet.epp
@@ -80,6 +80,10 @@ bool PCMET_expression_index(thread_db* tdbb, SSHORT phase, DeferredWork* work,
 
 	switch (phase)
 	{
+	case 0:
+		MET_delete_dependencies(tdbb, work->dfw_name, obj_expression_index);
+		return false;
+		
 	case 1:
 	case 2:
 		return true;