diff --git a/lib/zlib/CMakeLists.txt b/lib/zlib/CMakeLists.txt
index 15ceebe78..a21d8df6b 100644
--- a/lib/zlib/CMakeLists.txt
+++ b/lib/zlib/CMakeLists.txt
@@ -7,12 +7,6 @@ set(VERSION "1.3.1")
 
 option(ZLIB_BUILD_EXAMPLES "Enable Zlib Examples" ON)
 
-set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
-set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
-set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
-set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
-set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
-
 include(CheckTypeSize)
 include(CheckFunctionExists)
 include(CheckIncludeFile)
@@ -180,18 +174,18 @@ endif()
 
 if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
     install(TARGETS zlib zlibstatic
-        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
-        ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
-        LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
+        RUNTIME DESTINATION "bin"
+        ARCHIVE DESTINATION "lib"
+        LIBRARY DESTINATION "lib" )
 endif()
 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
-    install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
+    install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "include")
 endif()
 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
-    install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
+    install(FILES zlib.3 DESTINATION "share/man/man3")
 endif()
 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
-    install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
+    install(FILES ${ZLIB_PC} DESTINATION "share/pkgconfig")
 endif()
 
 #============================================================================