diff --git a/include/asm-x86/bitops.h b/include/asm-x86/bitops.h
index 96b1829cea15aa0fbc00177e394a9bab47a5a5b7..cfb2b64f76e7d645a8418426f71239b80250c5bb 100644
--- a/include/asm-x86/bitops.h
+++ b/include/asm-x86/bitops.h
@@ -356,7 +356,7 @@ static inline unsigned long ffz(unsigned long word)
  * __fls: find last set bit in word
  * @word: The word to search
  *
- * Undefined if no zero exists, so code should check against ~0UL first.
+ * Undefined if no set bit exists, so code should check against 0 first.
  */
 static inline unsigned long __fls(unsigned long word)
 {