diff --git a/code/nel/tools/3d/zviewer/CMakeLists.txt b/code/nel/tools/3d/zviewer/CMakeLists.txt
index a7a5150b7..35472f39c 100644
--- a/code/nel/tools/3d/zviewer/CMakeLists.txt
+++ b/code/nel/tools/3d/zviewer/CMakeLists.txt
@@ -14,4 +14,9 @@ NL_ADD_RUNTIME_FLAGS(zviewer)
 
 INSTALL(TARGETS zviewer RUNTIME DESTINATION ${NL_BIN_PREFIX} COMPONENT tools3d)
 INSTALL(FILES zviewer.cfg DESTINATION ${NL_ETC_PREFIX} COMPONENT tools3d)
-INSTALL(FILES readme.txt DESTINATION ${NL_SHARE_PREFIX}/zviewer COMPONENT tools3d)
+
+IF(WITH_UNIX_STRUCTURE)
+  INSTALL(FILES readme.txt DESTINATION ${NL_SHARE_PREFIX}/zviewer COMPONENT tools3d)
+ELSE()
+  INSTALL(FILES readme.txt DESTINATION ${NL_SHARE_PREFIX} COMPONENT tools3d RENAME zviewer.txt)
+ENDIF()