diff --git a/ports/asio/CMakeLists.txt b/ports/asio/CMakeLists.txt
index aa7354e763..4241b1ffc7 100644
--- a/ports/asio/CMakeLists.txt
+++ b/ports/asio/CMakeLists.txt
@@ -3,11 +3,6 @@ project(asio)
 
 add_library(asio INTERFACE)
 
-# Always use "ASIO_STANDALONE" to avoid boost dependency
-file(READ "asio/include/asio/detail/config.hpp" _contents)
-string(REPLACE "defined(ASIO_STANDALONE)" "!defined(VCPKG_DISABLE_ASIO_STANDALONE)" _contents "${_contents}")
-file(WRITE "asio/include/asio/detail/config.hpp" "${_contents}")
-
 # Export target
 install(TARGETS asio
     EXPORT asio
diff --git a/ports/asio/CONTROL b/ports/asio/CONTROL
index 49a2be94c9..c0da68a9bc 100644
--- a/ports/asio/CONTROL
+++ b/ports/asio/CONTROL
@@ -1,4 +1,4 @@
 Source: asio
-Version: 1.12.2-1
+Version: 1.12.2-2
 Homepage: https://github.com/chriskohlhoff/asio
 Description: Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.
diff --git a/ports/asio/portfile.cmake b/ports/asio/portfile.cmake
index f9b3b739d5..6c6d438a1e 100644
--- a/ports/asio/portfile.cmake
+++ b/ports/asio/portfile.cmake
@@ -9,6 +9,11 @@ vcpkg_from_github(
     HEAD_REF master
 )
 
+# Always use "ASIO_STANDALONE" to avoid boost dependency
+file(READ "${SOURCE_PATH}/asio/include/asio/detail/config.hpp" _contents)
+string(REPLACE "defined(ASIO_STANDALONE)" "!defined(VCPKG_DISABLE_ASIO_STANDALONE)" _contents "${_contents}")
+file(WRITE "${SOURCE_PATH}/asio/include/asio/detail/config.hpp" "${_contents}")
+
 # CMake install
 file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
 vcpkg_configure_cmake(