diff --git a/Makefile b/Makefile
index d094be40f458..02ae7d7d1d61 100644
--- a/Makefile
+++ b/Makefile
@@ -835,7 +835,7 @@ else
 DEBUG_CFLAGS	+= -g
 endif
 
-ifneq ($(LLVM_IAS),1)
+ifndef CONFIG_AS_IS_LLVM
 KBUILD_AFLAGS	+= -Wa,-gdwarf-2
 endif
 
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 226c366072da..c14b530abcbe 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -39,7 +39,7 @@ endif
 ifeq ($(CONFIG_LD_IS_LLD),y)
 	KBUILD_CFLAGS += -mno-relax
 	KBUILD_AFLAGS += -mno-relax
-ifneq ($(LLVM_IAS),1)
+ifndef CONFIG_AS_IS_LLVM
 	KBUILD_CFLAGS += -Wa,-mno-relax
 	KBUILD_AFLAGS += -Wa,-mno-relax
 endif