diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 3f5fe18..552a6c1 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -45,7 +45,7 @@ endif()
 if(EMSCRIPTEN)
     set(EXTRA_BOOST_CMAKE_ARGS
         -DCMAKE_CXX_FLAGS="-fdeclspec -pthread"
-        -DCMAKE_REQUIRE_FIND_PACKAGE_THREADS=OFF
+        -DCMAKE_DISABLE_FIND_PACKAGE_THREADS=ON
     )
 endif()