diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 48928c9bebef..021f55b7bd87 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -12,7 +12,7 @@ ifeq ($(SRCARCH),loongarch)
 endif
 
 ifeq ($(ARCH_HAS_KLP),y)
-	HAVE_XXHASH = $(shell echo "int main() {}" | \
+	HAVE_XXHASH = $(shell printf "$(pound)include <xxhash.h>\nXXH3_state_t *state;int main() {}" | \
 		      $(HOSTCC) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n)
 	ifeq ($(HAVE_XXHASH),y)
 		BUILD_KLP	 := y
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index 1e1ea8396eb3..aab7fa9c7e00 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -164,7 +164,7 @@ static bool opts_valid(void)
 
 #ifndef BUILD_KLP
 	if (opts.checksum) {
-		ERROR("--checksum not supported; install xxhash-devel/libxxhash-dev and recompile");
+		ERROR("--checksum not supported; install xxhash-devel/libxxhash-dev (version >= 0.8) and recompile");
 		return false;
 	}
 #endif