diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 911109a1..12be7c13 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -63,7 +63,7 @@ target_link_libraries(znclib PRIVATE ${CMAKE_DL_LIBS} Threads::Threads)
 if(ZLIB_FOUND)
 	target_link_libraries(znclib PRIVATE ZLIB::ZLIB)
 endif()
-if(Boost_FOUND)
+if(Boost_LOCALE_FOUND)
 	target_link_libraries(znclib PRIVATE Boost::locale)
 endif()
 if(ZNC_HAVE_ARGON)