diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47bc80e..5e2a7ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,7 @@ set_property(GLOBAL PROPERTY CXX_STANDARD 98)
 option(RECASTNAVIGATION_DEMO "Build demo" ON)
 option(RECASTNAVIGATION_TESTS "Build tests" ON)
 option(RECASTNAVIGATION_EXAMPLES "Build examples" ON)
+option(RECASTNAVIGATION_DT_POLYREF64 "Use 64bit polyrefs instead of 32bit for Detour" OFF)
 
 if(MSVC AND BUILD_SHARED_LIBS)
     set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
@@ -33,6 +34,9 @@ set(libdir "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
 set(bindir "\${exec_prefix}/${CMAKE_INSTALL_BINDIR}")
 set(includedir "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
 set(PACKAGE_VERSION "${LIB_VERSION}")
+if(RECASTNAVIGATION_DT_POLYREF64)
+    set(PKG_CONFIG_CFLAGS "${PKG_CONFIG_CFLAGS} -DDT_POLYREF64")
+endif()
 configure_file(
         "${RecastNavigation_SOURCE_DIR}/recastnavigation.pc.in"
         "${RecastNavigation_BINARY_DIR}/recastnavigation.pc"
diff --git a/Detour/CMakeLists.txt b/Detour/CMakeLists.txt
index 57ebd5a..910ec34 100644
--- a/Detour/CMakeLists.txt
+++ b/Detour/CMakeLists.txt
@@ -6,6 +6,10 @@ set_target_properties(Detour PROPERTIES DEBUG_POSTFIX -d)
 
 set(Detour_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/Include")
 
+if(RECASTNAVIGATION_DT_POLYREF64)
+    target_compile_definitions(Detour PUBLIC DT_POLYREF64)
+endif()
+
 target_include_directories(Detour PUBLIC
     "$<BUILD_INTERFACE:${Detour_INCLUDE_DIR}>"
 )