diff --git a/cmake/modules/CheckSubmodules.cmake b/cmake/modules/CheckSubmodules.cmake
index f36189c38..b9ea20778 100644
--- a/cmake/modules/CheckSubmodules.cmake
+++ b/cmake/modules/CheckSubmodules.cmake
@@ -18,7 +18,7 @@
 # For details see the accompanying COPYING-CMAKE-SCRIPTS file.
 
 # Files which confirm a successful clone
-SET(VALID_CRUMBS "CMakeLists.txt;Makefile;Makefile.in;Makefile.am;configure.ac;configure.py;autogen.sh;.gitignore;LICENSE;Home.md")
+SET(VALID_CRUMBS "CMakeLists.txt;Makefile;Makefile.in;Makefile.am;configure.ac;configure.py;autogen.sh;.gitignore;LICENSE;Home.md;license.txt")
 
 OPTION(NO_SHALLOW_CLONE "Disable shallow cloning of submodules" OFF)