diff --git a/Build/lib/process-line.test.ts b/Build/lib/process-line.test.ts
index 4048af32..ff12f5a3 100644
--- a/Build/lib/process-line.test.ts
+++ b/Build/lib/process-line.test.ts
@@ -12,7 +12,8 @@ describe('processLine', () => {
     ['   # comment', null],
     ['###id', '###id'],
     ['##.class', '##.class'],
-    ['## EOF', '## EOF']
+    ['## EOF', '## EOF'],
+    ['##### EOF', null]
   ] as const).forEach(([input, expected]) => {
     it(input, () => {
       expect(processLine(input)).toBe(expected);
diff --git a/Build/lib/process-line.ts b/Build/lib/process-line.ts
index 187054d8..b5373eca 100644
--- a/Build/lib/process-line.ts
+++ b/Build/lib/process-line.ts
@@ -23,7 +23,7 @@ export function processLine(line: string): string | null {
       // # Comment
       return null;
     }
-    if (trimmed.charCodeAt(2) === 35 /** # */ && trimmed.charCodeAt(3) === 35) {
+    if (trimmed.charCodeAt(2) === 35 /** # */ && trimmed.charCodeAt(3) === 35 /** # */) {
       // ################## EOF ##################
       return null;
     }