diff --git a/src/mosaic.test.ts b/src/mosaic.test.ts
index 82627a6..a4fb6ab 100644
--- a/src/mosaic.test.ts
+++ b/src/mosaic.test.ts
@@ -98,6 +98,18 @@ describe('generateMosaic', () => {
     expect(expanded.outputLength).toBe(expanded.inputLength * 10)
   })
 
+  it('不生成可能跳出正常行框的 Unicode 组合符', () => {
+    const outputs = Array.from({ length: 20 }, (_, seed) =>
+      generateMosaic(SOURCE, [], {
+        volume: 1000,
+        disorder: 100,
+        seed,
+      }).output,
+    ).join('')
+
+    expect(outputs).not.toMatch(/\p{Mark}/u)
+  })
+
   it('相同种子可复现，不同种子会重新侵蚀', () => {
     const candidates = selectKeywords(SOURCE, 14, 1)
     const first = generateMosaic(SOURCE, candidates, {
diff --git a/src/mosaic.ts b/src/mosaic.ts
index dcce973..6ceb301 100644
--- a/src/mosaic.ts
+++ b/src/mosaic.ts
@@ -237,8 +237,6 @@ const ENCODING_FRAGMENTS = ['Ã', 'Â', 'æ', 'å', '¤', '锟', '斤', '拷'] a
 
 const COMPLEX_HAN = ['黻', '鬯', '夔', '爨', '龘', '靐', '罅', '黹'] as const
 
-const COMBINING_MARKS = ['\u0336', '\u0337', '\u0338', '\u035F'] as const
-
 const HAN_PATTERN = /\p{Script=Han}/u
 const WORD_PATTERN = /[\p{L}\p{N}]/u
 
@@ -395,15 +393,12 @@ function generateNoise(length: number, disorder: number, random: Random): string
   let output = ''
   let previous = ''
   const repeatChance = 0.02 + disorder * 0.0015
-  const combiningChance = 0.02 + disorder * 0.0011
 
   for (let index = 0; index < length; index += 1) {
     const shouldRepeat = previous !== '' && random() < repeatChance
     const glyph = shouldRepeat ? previous : chooseNoiseGlyph(random)
-    const combining =
-      random() < combiningChance ? choose(COMBINING_MARKS, random) : ''
 
-    output += `${glyph}${combining}`
+    output += glyph
     previous = glyph
   }