diff --git a/sys/libkern/divdi3.c b/sys/libkern/divdi3.c
--- a/sys/libkern/divdi3.c
+++ b/sys/libkern/divdi3.c
@@ -40,7 +40,6 @@
 
 /*
  * Divide two signed quads.
- * ??? if -1/2 should produce -1 on this machine, this code is wrong
  */
 quad_t
 __divdi3(quad_t a, quad_t b)
diff --git a/sys/libkern/divmoddi4.c b/sys/libkern/divmoddi4.c
--- a/sys/libkern/divmoddi4.c
+++ b/sys/libkern/divmoddi4.c
@@ -37,7 +37,6 @@
 
 /*
  * Divide two signed quads.
- * ??? if -1/2 should produce -1 on this machine, this code is wrong
  */
 quad_t
 __divmoddi4(quad_t a, quad_t b, quad_t *rem)
diff --git a/sys/libkern/moddi3.c b/sys/libkern/moddi3.c
--- a/sys/libkern/moddi3.c
+++ b/sys/libkern/moddi3.c
@@ -40,9 +40,6 @@
 
 /*
  * Return remainder after dividing two signed quads.
- *
- * XXX
- * If -1/2 should produce -1 on this machine, this code is wrong.
  */
 quad_t
 __moddi3(quad_t a, quad_t b)