diff --git a/Makefile b/Makefile
index 1b141b70ac5c..0e30a1aa49ce 100644
--- a/Makefile
+++ b/Makefile
@@ -829,7 +829,9 @@ else
 DEBUG_CFLAGS	+= -g
 endif
 
+ifneq ($(LLVM_IAS),1)
 KBUILD_AFLAGS	+= -Wa,-gdwarf-2
+endif
 
 ifdef CONFIG_DEBUG_INFO_DWARF4
 DEBUG_CFLAGS	+= -gdwarf-4