diff --git a/CMakeLists.txt b/CMakeLists.txt
index c19c9dba7..f65accbc3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -187,7 +187,7 @@ if(NOT MANUAL_SUBMODULES)
       if (upToDate)
         message(STATUS "Submodule '${relative_path}' is up-to-date")
       else()
-        message(FATAL_ERROR "Submodule '${relative_path}' is not up-to-date. Please update with\ngit submodule update --init --force ${relative_path}\nor run cmake with -DMANUAL_SUBMODULES=1")
+        message(FATAL_ERROR "Submodule '${relative_path}' is not up-to-date. Please update all submodules with\ngit submodule update --init --force\nor run cmake with -DMANUAL_SUBMODULES=1\n")
       endif()
     endfunction ()