diff --git a/CMakeLists.txt b/CMakeLists.txt
index 377a05a..44a1791 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@
 # PmLogLib/CMakeLists.txt
 #
 
-cmake_minimum_required (VERSION 2.8.7)
+cmake_minimum_required (VERSION 3.5)
 
 if(BUILD_PRIVATE)
 	project(PmLogLib NONE)
@@ -43,7 +43,7 @@ endif()
 # To enable this option run "cmake -D BUILD_PRIVATE=ON"
 if(BUILD_PRIVATE)
 	webos_build_pkgconfig(files/pkgconfig/PmLogLib-private)
-	install(DIRECTORY "include/private/" DESTINATION @WEBOS_INSTALL_INCLUDEDIR@ FILES_MATCHING PATTERN "*.h" PATTERN ".*" EXCLUDE)
+	install(DIRECTORY "include/private/" DESTINATION ${WEBOS_INSTALL_INCLUDEDIR} FILES_MATCHING PATTERN "*.h" PATTERN ".*" EXCLUDE)
 	return()
 endif()
 
@@ -54,7 +54,7 @@ endif()
 if(NOT BUILD_WITHOUT_HEADERS)
 	webos_build_pkgconfig(files/pkgconfig/PmLogLib-headers)
 	webos_configure_header_files(include/public INSTALL)
-	install(DIRECTORY "include/public/" DESTINATION @WEBOS_INSTALL_INCLUDEDIR@ FILES_MATCHING PATTERN "*.h" PATTERN ".*" EXCLUDE)
+	install(DIRECTORY "include/public/" DESTINATION ${WEBOS_INSTALL_INCLUDEDIR} FILES_MATCHING PATTERN "*.h" PATTERN ".*" EXCLUDE)
 	if(SHIP_HEADERS_ONLY)
 		return()
 	endif()
diff --git a/cxx/CMakeLists.txt b/cxx/CMakeLists.txt
index 7743710..1174b8d 100644
--- a/cxx/CMakeLists.txt
+++ b/cxx/CMakeLists.txt
@@ -32,4 +32,4 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 add_library(PmLogLibCpp SHARED PmLog.cpp)
 target_link_libraries(PmLogLibCpp ${CMAKE_PROJECT_NAME})
 webos_build_library(NAME PmLogLibCpp NOHEADERS)
-install(FILES PmLog.h DESTINATION @WEBOS_INSTALL_INCLUDEDIR@)
+install(FILES PmLog.h DESTINATION ${WEBOS_INSTALL_INCLUDEDIR})