diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java b/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
index 027881ad5..a1948e6cc 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
@@ -714,7 +714,7 @@ public class QueryTTF {
                             if (idRangeOffset == 0) {
                                 unicodeToGlyphId.put(unicode, (unicode + idDelta) & 0xFFFF);
                             } else {
-                                int gIndex = (idRangeOffset / 2) + unicode - unicodeInclusive + segmentIndex;
+                                int gIndex = (idRangeOffset / 2) + unicode - unicodeInclusive + segmentIndex - segCount;
                                 unicodeToGlyphId.put(unicode, gIndex < glyphIdArrayLength ? f.glyphIdArray[gIndex] + idDelta : 0);
                             }
                         }