diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index d6815fbc5..3539828b8 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -81,7 +81,7 @@ endif()
 add_subdirectory(zlib EXCLUDE_FROM_ALL)
 
 # libzip
-add_subdirectory(libzip)
+add_subdirectory(libzip EXCLUDE_FROM_ALL)
 
 if (ENABLE_WEB_SERVICE)
     # LibreSSL