diff --git a/src/renderer/gl_engine/tvgGlRenderer.cpp b/src/renderer/gl_engine/tvgGlRenderer.cpp
index fecb9088..7d5eaa59 100644
--- a/src/renderer/gl_engine/tvgGlRenderer.cpp
+++ b/src/renderer/gl_engine/tvgGlRenderer.cpp
@@ -280,15 +280,14 @@ bool GlRenderer::renderShape(RenderData data)
 }
 
 
-bool GlRenderer::dispose(RenderData data)
+void GlRenderer::dispose(RenderData data)
 {
     auto sdata = static_cast<GlShape*>(data);
-    if (!sdata) return false;
+    if (!sdata) return;
 
     if (sdata->texId) glDeleteTextures(1, &sdata->texId);
 
     delete sdata;
-    return true;
 }
 
 static GLuint _genTexture(Surface* image)
diff --git a/src/renderer/gl_engine/tvgGlRenderer.h b/src/renderer/gl_engine/tvgGlRenderer.h
index 035582ba..f8a58531 100644
--- a/src/renderer/gl_engine/tvgGlRenderer.h
+++ b/src/renderer/gl_engine/tvgGlRenderer.h
@@ -59,7 +59,7 @@ public:
     bool renderShape(RenderData data) override;
     bool renderImage(RenderData data) override;
     bool postRender() override;
-    bool dispose(RenderData data) override;;
+    void dispose(RenderData data) override;;
     RenderRegion region(RenderData data) override;
     RenderRegion viewport() override;
     bool viewport(const RenderRegion& vp) override;
diff --git a/src/renderer/sw_engine/tvgSwRenderer.cpp b/src/renderer/sw_engine/tvgSwRenderer.cpp
index 4645c4a5..c187af38 100644
--- a/src/renderer/sw_engine/tvgSwRenderer.cpp
+++ b/src/renderer/sw_engine/tvgSwRenderer.cpp
@@ -63,7 +63,7 @@ struct SwTask : Task
         return region;
     }
 
-    virtual bool dispose() = 0;
+    virtual void dispose() = 0;
     virtual bool clip(SwRleData* target) = 0;
     virtual SwRleData* rle() = 0;
 
@@ -196,10 +196,9 @@ struct SwShapeTask : SwTask
         shapeDelOutline(&shape, mpool, tid);
     }
 
-    bool dispose() override
+    void dispose() override
     {
        shapeFree(&shape);
-       return true;
     }
 };
 
@@ -250,10 +249,9 @@ struct SwSceneTask : SwTask
         }
     }
 
-    bool dispose() override
+    void dispose() override
     {
         rleFree(sceneRle);
-        return true;
     }
 };
 
@@ -318,10 +316,9 @@ struct SwImageTask : SwTask
         imageDelOutline(&image, mpool, tid);
     }
 
-    bool dispose() override
+    void dispose() override
     {
        imageFree(&image);
-       return true;
     }
 };
 
@@ -703,17 +700,15 @@ ColorSpace SwRenderer::colorSpace()
 }
 
 
-bool SwRenderer::dispose(RenderData data)
+void SwRenderer::dispose(RenderData data)
 {
     auto task = static_cast<SwTask*>(data);
-    if (!task) return true;
+    if (!task) return;
     task->done();
     task->dispose();
 
     if (task->pushed) task->disposed = true;
     else delete(task);
-
-    return true;
 }
 
 
diff --git a/src/renderer/sw_engine/tvgSwRenderer.h b/src/renderer/sw_engine/tvgSwRenderer.h
index 83d94238..02359e4a 100644
--- a/src/renderer/sw_engine/tvgSwRenderer.h
+++ b/src/renderer/sw_engine/tvgSwRenderer.h
@@ -43,7 +43,7 @@ public:
     bool renderShape(RenderData data) override;
     bool renderImage(RenderData data) override;
     bool postRender() override;
-    bool dispose(RenderData data) override;
+    void dispose(RenderData data) override;
     RenderRegion region(RenderData data) override;
     RenderRegion viewport() override;
     bool viewport(const RenderRegion& vp) override;
diff --git a/src/renderer/tvgRender.h b/src/renderer/tvgRender.h
index fc573496..210382ef 100644
--- a/src/renderer/tvgRender.h
+++ b/src/renderer/tvgRender.h
@@ -286,7 +286,7 @@ public:
     virtual bool renderShape(RenderData data) = 0;
     virtual bool renderImage(RenderData data) = 0;
     virtual bool postRender() = 0;
-    virtual bool dispose(RenderData data) = 0;
+    virtual void dispose(RenderData data) = 0;
     virtual RenderRegion region(RenderData data) = 0;
     virtual RenderRegion viewport() = 0;
     virtual bool viewport(const RenderRegion& vp) = 0;
diff --git a/src/renderer/wg_engine/tvgWgRenderer.cpp b/src/renderer/wg_engine/tvgWgRenderer.cpp
index 0172e9f4..19cc1d70 100644
--- a/src/renderer/wg_engine/tvgWgRenderer.cpp
+++ b/src/renderer/wg_engine/tvgWgRenderer.cpp
@@ -174,11 +174,10 @@ bool WgRenderer::postRender()
 }
 
 
-bool WgRenderer::dispose(RenderData data)
+void WgRenderer::dispose(RenderData data)
 {
     auto renderData = (WgRenderDataPaint*)data;
     if (renderData) renderData->release(mContext);
-    return true;
 }
 
 
diff --git a/src/renderer/wg_engine/tvgWgRenderer.h b/src/renderer/wg_engine/tvgWgRenderer.h
index ab76a83e..3a4abbf1 100644
--- a/src/renderer/wg_engine/tvgWgRenderer.h
+++ b/src/renderer/wg_engine/tvgWgRenderer.h
@@ -40,7 +40,7 @@ public:
     bool renderShape(RenderData data);
     bool renderImage(RenderData data);
     bool postRender();
-    bool dispose(RenderData data);
+    void dispose(RenderData data);
     RenderRegion region(RenderData data);
     RenderRegion viewport();
     bool viewport(const RenderRegion& vp);