diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index d7b985de9..0c73d41a2 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -1197,7 +1197,10 @@ function(_ep_get_build_command name step cmd_var)
         else()
           set(cmd "${CMAKE_COMMAND}")
         endif()
-        set(args --build ${binary_dir} --config ${CMAKE_CFG_INTDIR})
+        set(args --build ".")
+        if (CMAKE_CFG_INTDIR AND NOT CMAKE_CFG_INTDIR STREQUAL ".")
+          list(APPEND args --config "${CMAKE_CFG_INTDIR}")
+        endif ()
         if(step STREQUAL "INSTALL")
           list(APPEND args --target install)
         endif()