diff --git a/application/controllers/Logbook.php b/application/controllers/Logbook.php
index 4cb3ddda3..3daa2107f 100644
--- a/application/controllers/Logbook.php
+++ b/application/controllers/Logbook.php
@@ -838,6 +838,9 @@ class Logbook extends CI_Controller {
 							case "Y":
 								$html .= "green";
 								break;
+							case "I":
+								$html .= "grey";
+								break;
 							default:
 								$html .= "red";
 						}
@@ -847,6 +850,9 @@ class Logbook extends CI_Controller {
 							case "Y":
 								$html .= "green";
 								break;
+							case "I":
+								$html .= "grey";
+								break;
 							default:
 								$html .= "red";
 						}
@@ -859,6 +865,9 @@ class Logbook extends CI_Controller {
 							case "Y":
 								$html .= "green";
 								break;
+							case "I":
+								$html .= "grey";
+								break;
 							default:
 								$html .= "red";
 						}
@@ -868,6 +877,9 @@ class Logbook extends CI_Controller {
 							case "Y":
 								$html .= "green";
 								break;
+							case "I":
+								$html .= "grey";
+								break;
 							default:
 								$html .= "red";
 						}