diff --git a/common/host_command_master.c b/common/host_command_master.c
index 39bbf37df5..d0a16e1331 100644
--- a/common/host_command_master.c
+++ b/common/host_command_master.c
@@ -188,8 +188,8 @@ int pd_host_command(int command, int version,
 static int command_pd_mcu(int argc, char **argv)
 {
 	char *e;
-	static char outbuf[128];
-	static char inbuf[128];
+	static char __bss_slow outbuf[128];
+	static char __bss_slow inbuf[128];
 	int command, version;
 	int i, ret, tmp;