diff --git a/CMakeLists.txt b/CMakeLists.txt
index 43c97c6..76b93c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,7 +54,8 @@ target_compile_definitions(ybcon PRIVATE YBCON_VERSION="${PROJECT_VERSION}")
 # lpkg = linux package, wpkg = windows package
 if (UNIX AND NOT MINGW)
     include(GNUInstallDirs)
-    set(CPACK_PACKAGING_INSTALL_PREFIX "/opt")
+    set(CMAKE_INSTALL_PREFIX "/opt")
+    set(CPACK_PACKAGING_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
     set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_FILE_NAME}_lpkg")
     set(CPACK_SYSTEM_NAME "Linux-${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}")
     set(CPACK_TOPLEVEL_TAG "Linux-${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}")