diff --git a/src/main.rs b/src/main.rs
index 3fa6497..9de4651 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -224,7 +224,12 @@ fn main() {
                 None => link_content,
             }.trim().to_lowercase();
 
-            let incoming_pages = incoming_map.get_mut(&page_id).unwrap();
+            let incoming_pages = match incoming_map.get_mut(&page_id) {
+                Some(v) => v,
+
+                // The page being referenced doesn't exist (a red link)
+                None => continue,
+            };
 
             incoming_pages.push(page);
         }
@@ -239,11 +244,13 @@ fn main() {
                 None => (link_content.trim().to_lowercase(), link_content)
             };
 
-            let permalink = page_map.get(&page_id)
-                .unwrap()
-                .permalink.as_str();
-
-            format!("<a href='{}'>{}</a>", permalink, link_text)
+            return match page_map.get(&page_id) {
+                Some(linked_page) => {
+                    let permalink =  linked_page.permalink.as_str();
+                    format!("<a href='{}'>{}</a>", permalink, link_text)
+                },
+                None => format!("<a href='#' class='calathea-404'>{}</a>", link_text),
+            }
         }).to_string());
     }