diff --git a/src/core/stats.c b/src/core/stats.c
index 69f97d41..8ea82497 100644
--- a/src/core/stats.c
+++ b/src/core/stats.c
@@ -69,7 +69,7 @@ void stats_init(void)
 
 #if LWIP_STATS_DISPLAY
 void
-stats_display_proto(struct stats_proto *proto, char *name)
+stats_display_proto(struct stats_proto *proto, const char *name)
 {
   LWIP_PLATFORM_DIAG(("\n%s\n\t", name));
   LWIP_PLATFORM_DIAG(("xmit: %"STAT_COUNTER_F"\n\t", proto->xmit)); 
@@ -110,7 +110,7 @@ stats_display_igmp(struct stats_igmp *igmp)
 
 #if MEM_STATS || MEMP_STATS
 void
-stats_display_mem(struct stats_mem *mem, char *name)
+stats_display_mem(struct stats_mem *mem, const char *name)
 {
   LWIP_PLATFORM_DIAG(("\nMEM %s\n\t", name));
   LWIP_PLATFORM_DIAG(("avail: %"U32_F"\n\t", (u32_t)mem->avail));