Use install directories provided by GNUInstallDirs.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e32fa33..c791b7e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -181,10 +181,10 @@
   install (TARGETS bro RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
 
   if(WIN32)
-    install(TARGETS ${BROTLI_LIBRARIES_CORE} RUNTIME DESTINATION bin)
+    install(TARGETS ${BROTLI_LIBRARIES_CORE} RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
   else()
-    install(TARGETS ${BROTLI_LIBRARIES_CORE} LIBRARY DESTINATION lib)
-    install(DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli DESTINATION include)
+    install(TARGETS ${BROTLI_LIBRARIES_CORE} LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+    install(DIRECTORY ${BROTLI_INCLUDE_DIRS}/brotli DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
   endif()
 
 endif()