diff --git a/cmake/toolchain/llvm/target.cmake b/cmake/toolchain/llvm/target.cmake
index 380972291254da..c3324a19d44e27 100644
--- a/cmake/toolchain/llvm/target.cmake
+++ b/cmake/toolchain/llvm/target.cmake
@@ -49,7 +49,9 @@ elseif(CONFIG_COMPILER_RT_RTLIB)
   set(runtime_lib "compiler_rt")
 endif()
 
-list(APPEND TOOLCHAIN_C_FLAGS --config
-	${ZEPHYR_BASE}/cmake/toolchain/llvm/clang_${runtime_lib}.cfg)
-list(APPEND TOOLCHAIN_LD_FLAGS --config
-	${ZEPHYR_BASE}/cmake/toolchain/llvm/clang_${runtime_lib}.cfg)
+list(APPEND TOOLCHAIN_C_FLAGS
+  "--config=${ZEPHYR_BASE}/cmake/toolchain/llvm/clang_${runtime_lib}.cfg"
+  )
+list(APPEND TOOLCHAIN_LD_FLAGS
+  "--config=${ZEPHYR_BASE}/cmake/toolchain/llvm/clang_${runtime_lib}.cfg"
+  )