diff --git a/src/apps.json b/src/apps.json
index d4091bfe8..081fbaef7 100755
--- a/src/apps.json
+++ b/src/apps.json
@@ -8443,7 +8443,7 @@
 			},
 			"url": "^https?://(?:[^\\/]+\\.)?.*?/sparql\\;confidence:20",
 			"headers": {
-				"Server": "^.*Virtuoso\/(\d{2}.\d{2}.\d{4}).*$;version:\\1"
+				"Server": "^.*Virtuoso\\/(\\d{2}\\.\\d{2}\\.\\d{4}).*$;version:\\1"
 			}
 		},
 		"Visual WebGUI": {