diff --git a/CHANGELOG.md b/CHANGELOG.md
index 188473224..f55a6709f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,7 @@ All notable changes to this project will be documented in this file.
 - Preview of PlaceObject and ShowFrame in the Dump view
 - FileAttributes tag exception in the Dump view
 - Adding new frames did not set correct timelined to ShowFrame
+- Computing dependent characters inside DefineSprite
 
 ### Changed
 - [#1455] All tag types are now allowed inside DefineSprite
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
index 94bbb23b5..c7e66cdb4 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
@@ -500,9 +500,9 @@ public final class SWF implements SWFContainerItem, Timelined {
         return null;
     }
 
-    public void computeDependentCharacters() {
-        Map<Integer, Set<Integer>> dep = new HashMap<>();
-        for (Tag tag : getTags()) {
+    
+    private void computeDependentCharacters(Timelined timelined, Map<Integer, Set<Integer>> dep) {
+        for (Tag tag : timelined.getTags()) {
             if (tag instanceof CharacterTag) {
                 int characterId = ((CharacterTag) tag).getCharacterId();
                 Set<Integer> needed = new HashSet<>();
@@ -517,7 +517,14 @@ public final class SWF implements SWFContainerItem, Timelined {
                     s.add(characterId);
                 }
             }
+            if (tag instanceof DefineSpriteTag) {
+                computeDependentCharacters((DefineSpriteTag) tag, dep);
+            }
         }
+    }
+    public void computeDependentCharacters() {
+        Map<Integer, Set<Integer>> dep = new HashMap<>();
+        computeDependentCharacters(this, dep);
 
         dependentCharacters = dep;
     }
@@ -2953,16 +2960,18 @@ public final class SWF implements SWFContainerItem, Timelined {
     }
 
     private void removeTagWithDependenciesFromTimeline(Tag toRemove, Timeline timeline) {
-        Map<Integer, Integer> stage = new HashMap<>();
-        Set<Integer> dependingChars = new HashSet<>();
-        Timelined timelined = timeline.timelined;
-        ReadOnlyTagList tags = timelined.getTags();
+        Set<Integer> dependingChars = new HashSet<>();        
         if (toRemove instanceof CharacterTag) {
             int characterId = ((CharacterTag) toRemove).getCharacterId();
             dependingChars = getDependentCharacters(characterId);
             dependingChars.add(characterId);
         }
-
+        removeTagWithDependenciesFromTimeline(toRemove, timeline, dependingChars);
+    }
+    private void removeTagWithDependenciesFromTimeline(Tag toRemove, Timeline timeline, Set<Integer> dependingChars) {
+        Map<Integer, Integer> stage = new HashMap<>();
+        Timelined timelined = timeline.timelined;
+        ReadOnlyTagList tags = timelined.getTags();        
         for (int i = 0; i < tags.size(); i++) {
             Tag t = tags.get(i);
             if (t instanceof RemoveTag) {
@@ -3012,7 +3021,7 @@ public final class SWF implements SWFContainerItem, Timelined {
             }
 
             if (t instanceof Timelined) {
-                removeTagWithDependenciesFromTimeline(toRemove, ((Timelined) t).getTimeline());
+                removeTagWithDependenciesFromTimeline(toRemove, ((Timelined) t).getTimeline(), dependingChars);
             }
         }
     }
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/Tag.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/Tag.java
index 58a45d2c9..5ea6f5c95 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/Tag.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/Tag.java
@@ -661,8 +661,8 @@ public abstract class Tag implements NeedsCharacters, Exportable, Serializable {
         }
     }
 
-    public void getDependentCharacters(Set<Integer> dependent) {
-        for (Tag tag : swf.getTags()) {
+    private void getDependentCharactersOnTimelined(Timelined timelined, Set<Integer> dependent) {
+        for (Tag tag : timelined.getTags()) {
             if (tag instanceof CharacterTag) {
                 Set<Integer> needed = new HashSet<>();
                 tag.getNeededCharactersDeep(needed);
@@ -673,8 +673,15 @@ public abstract class Tag implements NeedsCharacters, Exportable, Serializable {
                     }
                 }
             }
+            if (tag instanceof DefineSpriteTag) {
+                getDependentCharactersOnTimelined((DefineSpriteTag) tag, dependent);
+            }
         }
     }
+    
+    public void getDependentCharacters(Set<Integer> dependent) {
+        getDependentCharactersOnTimelined(swf, dependent);        
+    }
 
     public void getTagInfo(TagInfo tagInfo) {