diff --git a/submodules/CMakeLists.txt b/submodules/CMakeLists.txt
index b0f0e2d1ee..1fa98fa430 100644
--- a/submodules/CMakeLists.txt
+++ b/submodules/CMakeLists.txt
@@ -257,7 +257,6 @@ else()
             message(ERROR "WTF ${CX_PLATFORM} ${CMAKE_TARGET_ARCHITECTURE}")
             set(OPENSSL_CONFIG_CMD ${CMAKE_CURRENT_SOURCE_DIR}/${QUIC_OPENSSL}/config)
         endif()
-        list(APPEND OPENSSL_CONFIG_FLAGS -isysroot ${CMAKE_OSX_SYSROOT})
         if(SDK_NAME)
             list(APPEND OPENSSL_CONFIG_FLAGS "-m${SDK_NAME}-version-min=${DEPLOYMENT_TARGET}")
         elseif(CMAKE_OSX_DEPLOYMENT_TARGET)