diff --git a/EIPS/eip-198.md b/EIPS/eip-198.md
index c0c05345..4cdbfc22 100644
--- a/EIPS/eip-198.md
+++ b/EIPS/eip-198.md
@@ -101,4 +101,4 @@ The bit-based exponent calculation is done specifically to fairly charge for the
 
 # Copyright
 
-Copyright and related rights waived via CC0.
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
diff --git a/EIPS/eip-609.md b/EIPS/eip-609.md
index b8147438..bfdd5069 100644
--- a/EIPS/eip-609.md
+++ b/EIPS/eip-609.md
@@ -24,7 +24,7 @@ This specifies the changes included in the hard fork named Byzantium.
   - [EIP 140](./eip-140.md) (REVERT instruction in the Ethereum Virtual Machine)
   - [EIP 196](./eip-196.md) (Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128)
   - [EIP 197](./eip-197.md) (Precompiled contracts for optimal ate pairing check on the elliptic curve alt_bn128)
-  - EIP 198 (Precompiled contract for bigint modular exponentiation)
+  - [EIP 198](./eip-198.md) (Precompiled contract for bigint modular exponentiation)
   - [EIP 211](./eip-211.md) (New opcodes: RETURNDATASIZE and RETURNDATACOPY)
   - [EIP 214](./eip-214.md) (New opcode STATICCALL)
   - [EIP 649](./eip-649.md) (Difficulty Bomb Delay and Block Reward Reduction)