diff --git a/utils/libmarias3/CMakeLists.txt b/utils/libmarias3/CMakeLists.txt
index 0fb8b0e7d..73c97cfd0 100644
--- a/utils/libmarias3/CMakeLists.txt
+++ b/utils/libmarias3/CMakeLists.txt
@@ -8,7 +8,7 @@ if(GIT_FOUND)
     if(GIT_SUBMODULE)
         message(STATUS "Submodule update")
         execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive
-			WORKING_DIRECTORY ${S3API_DIR}
+                        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
                         RESULT_VARIABLE GIT_SUBMOD_RESULT)
         if(NOT GIT_SUBMOD_RESULT EQUAL "0")
             message(FATAL_ERROR "git submodule update --init failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")