diff --git a/oidset.h b/oidset.h
index 5346563b0b..d6ef0546a5 100644
--- a/oidset.h
+++ b/oidset.h
@@ -5,7 +5,7 @@
 #include "khash.h"
 
 /**
- * This API is similar to sha1-array, in that it maintains a set of object ids
+ * This API is similar to oid-array, in that it maintains a set of object ids
  * in a memory-efficient way. The major differences are:
  *
  *   1. It uses a hash, so we can do online duplicate removal, rather than