diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 8e4bcf21f..890dd3d56 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -57,6 +57,9 @@ if (ENABLE_WEB_SERVICE)
     # CPR
     option(BUILD_TESTING OFF)
     option(BUILD_CPR_TESTS OFF)
+    if(UNIX OR APPLE)
+        option(USE_SYSTEM_CURL ON)
+    endif()
     add_subdirectory(cpr)
     target_include_directories(cpr INTERFACE ./cpr/include)