diff --git a/CMakeLists.txt b/CMakeLists.txt
index c60f39ec97e..ca14984c69a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,10 @@ if (CMAKE_TOOLCHAIN_FILE MATCHES "vcpkg.cmake$")
     set(CMAKE_PROJECT_ladybird_INCLUDE_BEFORE "Meta/CMake/vcpkg/generate_vcpkg_toolchain_variables.cmake")
 endif()
 
+if (APPLE AND NOT CMAKE_OSX_SYSROOT)
+    set(CMAKE_OSX_SYSROOT macosx)
+endif()
+
 project(ladybird
         VERSION 0.1.0
         LANGUAGES C CXX
diff --git a/Meta/CMake/vcpkg/base-triplets/arm64-osx.cmake b/Meta/CMake/vcpkg/base-triplets/arm64-osx.cmake
index 312c49acc42..8fac22a5532 100644
--- a/Meta/CMake/vcpkg/base-triplets/arm64-osx.cmake
+++ b/Meta/CMake/vcpkg/base-triplets/arm64-osx.cmake
@@ -2,5 +2,6 @@ set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
 set(VCPKG_TARGET_ARCHITECTURE arm64)
 set(VCPKG_OSX_ARCHITECTURES arm64)
 set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_OSX_SYSROOT macosx)
 
 include(${CMAKE_CURRENT_LIST_DIR}/base.cmake)
diff --git a/Meta/CMake/vcpkg/base-triplets/x64-osx.cmake b/Meta/CMake/vcpkg/base-triplets/x64-osx.cmake
index ce125bc4ede..6ea0c2f1dfc 100644
--- a/Meta/CMake/vcpkg/base-triplets/x64-osx.cmake
+++ b/Meta/CMake/vcpkg/base-triplets/x64-osx.cmake
@@ -2,5 +2,6 @@ set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
 set(VCPKG_TARGET_ARCHITECTURE x64)
 set(VCPKG_OSX_ARCHITECTURES x86_64)
 set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_OSX_SYSROOT macosx)
 
 include(${CMAKE_CURRENT_LIST_DIR}/base.cmake)
diff --git a/Meta/Lagom/BuildFuzzers.sh b/Meta/Lagom/BuildFuzzers.sh
index b6f9aa48d77..73118108769 100755
--- a/Meta/Lagom/BuildFuzzers.sh
+++ b/Meta/Lagom/BuildFuzzers.sh
@@ -60,7 +60,6 @@ cmake -GNinja --preset=Distribution -B Build/tools \
     -DCMAKE_INSTALL_PREFIX=Build/tool-install \
     -DCMAKE_C_COMPILER=$BEST_CLANG_CANDIDATE \
     -DCMAKE_CXX_COMPILER="${BEST_CLANG_CANDIDATE/clang/clang++}" \
-    -DCMAKE_OSX_SYSROOT=macosx \
     -Dpackage=LagomTools
 ninja -C Build/tools install
 
diff --git a/Meta/Lagom/CMakeLists.txt b/Meta/Lagom/CMakeLists.txt
index d343477b3ab..4c06f850f6d 100644
--- a/Meta/Lagom/CMakeLists.txt
+++ b/Meta/Lagom/CMakeLists.txt
@@ -1,5 +1,9 @@
 cmake_minimum_required (VERSION 3.21)
 
+if (APPLE AND NOT CMAKE_OSX_SYSROOT)
+    set(CMAKE_OSX_SYSROOT macosx)
+endif()
+
 project(
     Lagom
     VERSION 0.0.0