diff --git a/cmake/External.cmake b/cmake/External.cmake
index d513efc2..e24a1c31 100644
--- a/cmake/External.cmake
+++ b/cmake/External.cmake
@@ -16,7 +16,7 @@ if (APPLE)
 endif()
 
 # Set the configuration
-configure_file(${CMAKE_SOURCE_DIR}/cmake/extern/CURL.txt.in
+configure_file(${CMAKE_INSTALL_PREFIX}/cmake/extern/CURL.txt.in
                ${EXTERNAL_LIBRARY_DIR}/curl/CMakeLists.txt)
 
 # Execute Git Clone and run Cmake
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2941b712..7e0ae447 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -7,7 +7,7 @@ project(ark_cpp_client C CXX)
 # External Libraries
 # ------------------------------------------------------------------------------
 
-include(${CMAKE_SOURCE_DIR}/cmake/External.cmake)
+include(${CMAKE_INSTALL_PREFIX}/cmake/External.cmake)
 
 # ------------------------------------------------------------------------------