diff --git a/lib/libc/amd64/string/memmove.S b/lib/libc/amd64/string/memmove.S
index 630c034c85c..54aa0953803 100644
--- a/lib/libc/amd64/string/memmove.S
+++ b/lib/libc/amd64/string/memmove.S
@@ -34,8 +34,6 @@ __FBSDID("$FreeBSD$");
 /*
  * memmove(dst, src, cnt)
  *         rdi, rsi, rdx
- * Contains parts of bcopy written by:
- *  ws@tools.de     (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
  */
 
 /*
diff --git a/sys/amd64/amd64/support.S b/sys/amd64/amd64/support.S
index af4e9c313b8..2d519a7a376 100644
--- a/sys/amd64/amd64/support.S
+++ b/sys/amd64/amd64/support.S
@@ -197,8 +197,6 @@ END(memcmp)
 /*
  * memmove(dst, src, cnt)
  *         rdi, rsi, rdx
- * Adapted from bcopy written by:
- *  ws@tools.de     (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
  */
 
 /*