diff --git a/plugin/filter/dialect.go b/plugin/filter/dialect.go
index a6e15fa98..89de912db 100644
--- a/plugin/filter/dialect.go
+++ b/plugin/filter/dialect.go
@@ -222,7 +222,7 @@ func (d *PostgreSQLDialect) GetBooleanCheck(path string) string {
 }
 
 func (d *PostgreSQLDialect) GetTimestampComparison(field string) string {
-	return fmt.Sprintf("EXTRACT(EPOCH FROM %s.%s)", d.GetTablePrefix(), field)
+	return fmt.Sprintf("EXTRACT(EPOCH FROM TO_TIMESTAMP(%s.%s))", d.GetTablePrefix(), field)
 }
 
 func (*PostgreSQLDialect) GetCurrentTimestamp() string {