diff --git a/CMakeLists.txt b/CMakeLists.txt
index a76370c2a702685af9f5c86fc6ae1757c1879c54..0ef47d668204b198caff1fe90f52d08d69bd76ee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -674,14 +674,16 @@ macro(unix2dos VARNAME)
 endmacro(unix2dos)
 
 if(WIN32)
-  set(GMSH_BIN .)
-  set(GMSH_DOC .)
-  unix2dos(GMSH_API)
-  unix2dos(WELCOME_FILE)
-  unix2dos(LICENSE_FILE)
-  unix2dos(CREDITS_FILE)
-  unix2dos(TUTORIAL_FILES)
-  unix2dos(DEMO_FILES)
+  set(GMSH_BIN "")
+  set(GMSH_DOC "")
+  if(CYGWIN)
+    unix2dos(GMSH_API)
+    unix2dos(WELCOME_FILE)
+    unix2dos(LICENSE_FILE)
+    unix2dos(CREDITS_FILE)
+    unix2dos(TUTORIAL_FILES)
+    unix2dos(DEMO_FILES)
+  endif(CYGWIN)
 else(WIN32)
   set(GMSH_BIN bin)
   set(GMSH_DOC share/doc/gmsh)