diff --git a/toolchain/clang/compile.mk b/toolchain/clang/compile.mk
index 3f392f3..242ff21 100644
--- a/toolchain/clang/compile.mk
+++ b/toolchain/clang/compile.mk
@@ -10,7 +10,6 @@
 c_toolchain_path       :=
 def_source_path        :=
 def_obj_output_path    :=
-compiler_flag_list     :=
 source_file            :=
 def_source_file        :=
 obj_alias              :=
diff --git a/toolchain/gcc/compile.mk b/toolchain/gcc/compile.mk
index 21fa88c..93ee8d3 100644
--- a/toolchain/gcc/compile.mk
+++ b/toolchain/gcc/compile.mk
@@ -12,7 +12,6 @@
 c_toolchain_path       :=
 def_source_path        :=
 def_obj_output_path    :=
-compiler_flag_list     :=
 source_file            :=
 def_source_file        :=
 obj_alias              :=