diff --git a/cmake/AwsPrebuildDependency.cmake b/cmake/AwsPrebuildDependency.cmake
index 598ea2aa4..0a52f69a8 100644
--- a/cmake/AwsPrebuildDependency.cmake
+++ b/cmake/AwsPrebuildDependency.cmake
@@ -29,7 +29,7 @@ function(aws_prebuild_dependency)
     string(REPLACE ";" "\\\\;" ESCAPED_PREFIX_PATH "${CMAKE_PREFIX_PATH}")
     # For execute_process to accept a dynamically constructed command, it should be passed in a list format.
     set(cmakeCommand "${CMAKE_COMMAND}")
-    list(APPEND cmakeCommand -S ${AWS_PREBUILD_SOURCE_DIR})
+    list(APPEND cmakeCommand ${AWS_PREBUILD_SOURCE_DIR})
     list(APPEND cmakeCommand -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE})
     list(APPEND cmakeCommand -DCMAKE_PREFIX_PATH=${ESCAPED_PREFIX_PATH})
     list(APPEND cmakeCommand -DCMAKE_INSTALL_PREFIX=${depInstallDir})