diff --git a/EIPS/eip-reduce_block_reward.md b/EIPS/eip-858.md
similarity index 99%
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rename to EIPS/eip-858.md
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--- a/EIPS/eip-reduce_block_reward.md
+++ b/EIPS/eip-858.md
@@ -1,6 +1,6 @@
 ## Preamble
 
-    EIP: <to be assigned>
+    EIP: 858
     Title: Reduce block reward
     Author: Carl Larson <cslarson@gmail.com>
     Type: Standard Track