diff --git a/CMakeLists.txt b/CMakeLists.txt
index fdfc94b..4c60546 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 message(STATUS "Using CMake version ${CMAKE_VERSION}")
 cmake_minimum_required(VERSION 3.10...${CMAKE_VERSION})
 
-SET(InfiniTime_DIR "InfiniTime" CACHE PATH "Path to InfiniTime source path to use for simulator")
+SET(InfiniTime_DIR "${CMAKE_SOURCE_DIR}/InfiniTime" CACHE PATH "Path to InfiniTime source path to use for simulator")
 
 if(NOT EXISTS ${InfiniTime_DIR})
   message(FATAL_ERROR "Can't access folder '${InfiniTime_DIR}'. Try `git submodule update --init --recursive` to initialize the git submodule of InfiniTime")