diff --git a/CPackConfig.cmake b/CPackConfig.cmake
index 3c1ed6bd..65de9c96 100644
--- a/CPackConfig.cmake
+++ b/CPackConfig.cmake
@@ -24,14 +24,18 @@ set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSIO
 
 
 ### nsis generator
-set(CPACK_GENERATOR "NSIS")
+set(CPACK_GENERATOR "ZIP")
+
+find_package(NSIS)
+if (HAVE_NSIS)
+    set(CPACK_GENERATOR "${CPACK_GENERATOR};NSIS")
+    set(CPACK_NSIS_DISPLAY_NAME "The SSH Library")
+    set(CPACK_NSIS_COMPRESSOR "/SOLID zlib")
+    set(CPACK_NSIS_MENU_LINKS "http://www.libssh.org/" "libssh homepage")
+if (HAVE_NSIS)
 
 set(CPACK_PACKAGE_INSTALL_DIRECTORY "libssh")
 
-set(CPACK_NSIS_DISPLAY_NAME "The SSH Library")
-set(CPACK_NSIS_COMPRESSOR "/SOLID zlib")
-set(CPACK_NSIS_MENU_LINKS "http://www.libssh.org/" "libssh homepage")
-
 set(CPACK_PACKAGE_FILE_NAME ${APPLICATION_NAME}-${CPACK_PACKAGE_VERSION})
 
 set(CPACK_COMPONENT_LIBRARIES_DISPLAY_NAME "Libraries")
diff --git a/cmake/Modules/FindNSIS.cmake b/cmake/Modules/FindNSIS.cmake
new file mode 100644
index 00000000..c3910435
--- /dev/null
+++ b/cmake/Modules/FindNSIS.cmake
@@ -0,0 +1,31 @@
+# - Try to find NSIS
+# Once done this will define
+#
+#  NSIS_FOUND - system has NSIS
+#  NSIS_MAKE - NSIS creator executable
+#
+#  Copyright (c) 2010 Andreas Schneider <mail@cynapses.org>
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+if (NSIS_MAKE)
+  # in cache already
+  set(NSIS_FOUND TRUE)
+elseif (NSIS_MAKE)
+    find_program(NSIS_MAKE
+        NAMES
+            makensis
+        PATHS
+            ${_NSIS_DIR}
+            ${_NSIS_DIR}/Bin
+            $ENV{PROGRAMFILES}/NSIS
+    )
+
+    include(FindPackageHandleStandardArgs)
+    find_package_handle_standard_args(NSIS DEFAULT_MSG NSIS_MAKE)
+
+    mark_as_advanced(NSIS_MAKE)
+endif (NSIS_MAKE)