diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55f0f15..39bf21f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,11 @@ set(SOEM_LIB_INSTALL_DIR lib)
 if(WIN32)
   set(OS "win32")
   include_directories(oshw/win32/wpcap/Include)
-  link_directories(${CMAKE_SOURCE_DIR}/oshw/win32/wpcap/Lib)
+  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+    link_directories(${CMAKE_SOURCE_DIR}/oshw/win32/wpcap/Lib/x64)
+  elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
+    link_directories(${CMAKE_SOURCE_DIR}/oshw/win32/wpcap/Lib)
+  endif()
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_NO_WARNINGS")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}  /WX")
   set(OS_LIBS wpcap.lib Packet.lib Ws2_32.lib Winmm.lib)