diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56534f32f..5946295ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,7 +69,11 @@ if (CPP-NETLIB_ENABLE_HTTPS)
     endif()
   endif()
  if (CPP-NETLIB_STATIC_OPENSSL)
-   set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
+  if (WIN32)
+    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib)
+  else()
+    set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
+  endif()
  endif()
   find_package(OpenSSL)
 endif()