X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/a70186f00cc3977370401b4736aac4e43c5fc689..58a9c67822f4640964044ec485426d090bcb123f:/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 57f1afc82b..d783249ebe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -189,7 +189,9 @@ if(WIN32)
   if(NSIS_WIN_VERSION MATCHES "")
     set(NSIS_WIN_VERSION $ENV{PROCESSOR_ARCHITECTURE})
   endif()
-  string(TOLOWER ${NSIS_WIN_VERSION} NSIS_WIN_VERSION)
+  if(${NSIS_WIN_VERSION})
+    string(TOLOWER ${NSIS_WIN_VERSION} NSIS_WIN_VERSION)
+  endif()
 
   set(_XBT_WIN32 1)