diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 2d0f3b53c3..49e88def7a 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -447,7 +447,7 @@ elseif (USE_CLANG_TOOLCHAIN)
     include_directories("${TOOLCHAIN_ROOT}/include/c++/v1")
 else()
     if (NOT EXISTS ${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/)
-        message(FATAL_ERROR "Toolchain version ${GCC_VERSION} appears to be missing! Please run: Meta/serenity.sh rebuild-toolchain")
+        message(FATAL_ERROR "Toolchain version ${GCC_VERSION} (${SERENITY_ARCH}) appears to be missing! Please run: Meta/serenity.sh rebuild-toolchain ${SERENITY_ARCH}")
     endif()
     include_directories(${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/)
     include_directories(${TOOLCHAIN_ROOT}/${SERENITY_ARCH}-pc-serenity/include/c++/${GCC_VERSION}/${SERENITY_ARCH}-pc-serenity/)