diff --git a/tools/molck/CMakeLists.txt b/tools/molck/CMakeLists.txt
index 346f3466a7f728d411b418968fab7f8ed94a7bca..9a3fe56fb41785aa0220ab9ca9c2375490138aad 100644
--- a/tools/molck/CMakeLists.txt
+++ b/tools/molck/CMakeLists.txt
@@ -1,3 +1,4 @@
-executable(NAME molck SOURCES main.cc 
+if (NOT WIN32)
+executable(NAME molck SOURCES main.cc
            DEPENDS_ON ost_io STATIC)
-
+endif(WIN32)