diff --git a/cmake/toolchain/llvm/target.cmake b/cmake/toolchain/llvm/target.cmake
index 58c3b8ebbfc4d..d8684ef53d07c 100644
--- a/cmake/toolchain/llvm/target.cmake
+++ b/cmake/toolchain/llvm/target.cmake
@@ -55,7 +55,5 @@ 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)