diff --git a/libutils/String8.cpp b/libutils/String8.cpp
index 9092cbc..3323b82 100644
--- a/libutils/String8.cpp
+++ b/libutils/String8.cpp
@@ -424,7 +424,7 @@
             next = len;
         }
 
-        memcpy(buf + tail, buf + index + skip, next - index - skip);
+        memmove(buf + tail, buf + index + skip, next - index - skip);
         tail += next - index - skip;
         index = next;
     }