diff --git a/src/evict.c b/src/evict.c
index cdb49a551..39deb65a6 100644
--- a/src/evict.c
+++ b/src/evict.c
@@ -364,7 +364,7 @@ size_t freeMemoryGetNotCountedMemory(void) {
         }
     }
     if (server.aof_state != AOF_OFF) {
-        overhead += sdslen(server.aof_buf)+aofRewriteBufferSize();
+        overhead += sdsalloc(server.aof_buf)+aofRewriteBufferSize();
     }
     return overhead;
 }
diff --git a/src/object.c b/src/object.c
index 7c98a6ef3..2e2ebee21 100644
--- a/src/object.c
+++ b/src/object.c
@@ -1011,7 +1011,7 @@ struct redisMemOverhead *getMemoryOverheadData(void) {
 
     mem = 0;
     if (server.aof_state != AOF_OFF) {
-        mem += sdslen(server.aof_buf);
+        mem += sdsalloc(server.aof_buf);
         mem += aofRewriteBufferSize();
     }
     mh->aof_buffer = mem;