diff --git a/cmd/postgres_exporter/postgres_exporter.go b/cmd/postgres_exporter/postgres_exporter.go
index 5abadaff..36c524c8 100644
--- a/cmd/postgres_exporter/postgres_exporter.go
+++ b/cmd/postgres_exporter/postgres_exporter.go
@@ -1149,7 +1149,9 @@ func ExcludeDatabases(s string) ExporterOpt {
 // IncludeDatabases allows to filter result from AutoDiscoverDatabases
 func IncludeDatabases(s string) ExporterOpt {
 	return func(e *Exporter) {
-		e.includeDatabases = strings.Split(s, ",")
+		if len(s) > 0 {
+			e.includeDatabases = strings.Split(s, ",")
+		}
 	}
 }