diff --git a/Makefile b/Makefile
index 35ca90776a9fdfccc8216eae0c9bd23e25577942..e98fcc065f4f560824b3918b6c327ed4ffbf2367 100644
--- a/Makefile
+++ b/Makefile
@@ -901,7 +901,7 @@ endif
 ifdef CONFIG_LTO_CLANG
 ifdef CONFIG_LTO_CLANG_THIN
 CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
-KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod-prefix).thinlto-cache
+KBUILD_LDFLAGS	+= --thinlto-cache-dir=$(extmod-prefix).thinlto-cache --lto-O0
 else
 CC_FLAGS_LTO	:= -flto
 endif