diff --git a/Meta/CMake/vcpkg/generate_vcpkg_toolchain_variables.cmake b/Meta/CMake/vcpkg/generate_vcpkg_toolchain_variables.cmake
index abe04fd1d67..88436155b65 100644
--- a/Meta/CMake/vcpkg/generate_vcpkg_toolchain_variables.cmake
+++ b/Meta/CMake/vcpkg/generate_vcpkg_toolchain_variables.cmake
@@ -33,8 +33,8 @@ if (NOT DEFINED CACHE{VCPKG_TARGET_TRIPLET} AND NOT DEFINED CACHE{VCPKG_HOST_TRI
     endif()
 
     # And then, only tweak settings if the triplets are ours
-    string(FIND "${VCPKG_OVERLAY_TRIPLETS}" "${CMAKE_CURRENT_SOURCE_DIR}" VCPKG_OVERLAY_TRIPLETS_MATCH)
-    if (VCPKG_OVERLAY_TRIPLETS_MATCH EQUAL -1)
+    cmake_path(IS_PREFIX CMAKE_CURRENT_SOURCE_DIR "${VCPKG_OVERLAY_TRIPLETS}" NORMALIZE TRIPLET_IS_OURS)
+    if (NOT TRIPLET_IS_OURS)
         return()
     endif()