diff --git a/core/net/rime/rimeaddr.c b/core/net/rime/rimeaddr.c
index 80899f802..c0b039b48 100644
--- a/core/net/rime/rimeaddr.c
+++ b/core/net/rime/rimeaddr.c
@@ -43,6 +43,7 @@
  */
 
 #include "net/rime/rimeaddr.h"
+#include <string.h>
 
 rimeaddr_t rimeaddr_node_addr;
 #if RIMEADDR_SIZE == 2
@@ -58,22 +59,13 @@ const rimeaddr_t rimeaddr_null = { { 0, 0, 0, 0, 0, 0, 0, 0 } };
 void
 rimeaddr_copy(rimeaddr_t *dest, const rimeaddr_t *src)
 {
-  uint8_t i;
-  for(i = 0; i < RIMEADDR_SIZE; i++) {
-    dest->u8[i] = src->u8[i];
-  }
+	memcpy(dest, src, RIMEADDR_SIZE);
 }
 /*---------------------------------------------------------------------------*/
 int
 rimeaddr_cmp(const rimeaddr_t *addr1, const rimeaddr_t *addr2)
 {
-  uint8_t i;
-  for(i = 0; i < RIMEADDR_SIZE; i++) {
-    if(addr1->u8[i] != addr2->u8[i]) {
-      return 0;
-    }
-  }
-  return 1;
+	return (memcmp( addr1, addr2, RIMEADDR_SIZE) == 0);
 }
 /*---------------------------------------------------------------------------*/
 void