diff --git a/apps/sample/trimesh_attribute/trimesh_attribute.pro b/apps/sample/trimesh_attribute/trimesh_attribute.pro
index 8da4c00d..16654d1e 100644
--- a/apps/sample/trimesh_attribute/trimesh_attribute.pro
+++ b/apps/sample/trimesh_attribute/trimesh_attribute.pro
@@ -1,3 +1,3 @@
 include(../common.pri)
 TARGET = trimesh_attribute
-SOURCES += trimesh_attribute.cpp ../../../wrap/ply/plylib.cpp
+SOURCES += trimesh_attribute.cpp