--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -110,8 +110,6 @@
         ${JSONC_LIBRARIES}
 )
 
-set(CMAKE_INSTALL_PREFIX "/usr/local")
 install(TARGETS ssldump DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)
 
-set(CMAKE_INSTALL_MANDIR "/usr/local/share/man")
 install(FILES ssldump.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)