diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index d3b671a63..0d6b438cc 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -232,8 +232,8 @@ if (NOT LIBUSB_FOUND AND NOT USE_PRECOMPILED_LIBS)
         set(LIBUSB_LIBRARIES "${install_dir}/lib/libusb-1.0${CMAKE_SHARED_LIBRARY_SUFFIX}" CACHE INTERNAL "")
         set(MACOS_EXTERNAL_LIBS_FIXUP "${MACOS_EXTERNAL_LIBS_FIXUP};${install_dir}/lib")
         add_custom_command(TARGET libusb POST_BUILD
-                    COMMAND codesign --remove-signature "${install_dir}/lib/libusb-1.0${CMAKE_SHARED_LIBRARY_SUFFIX}"
-                    COMMENT "removing signature on libusb")
+                    COMMAND codesign --verify "${install_dir}/lib/libusb-1.0${CMAKE_SHARED_LIBRARY_SUFFIX}"
+                    COMMENT "checking signature on libusb")
     endif ()
 endif (NOT LIBUSB_FOUND AND NOT USE_PRECOMPILED_LIBS)