diff --git a/bin/solc b/bin/solc
index 24df6806aa33fc2572ee6301976106535aa03ffe..95132dffe96bb4d81e1d98751bffd0c574ab8a1e 100755
--- a/bin/solc
+++ b/bin/solc
@@ -16,7 +16,7 @@ do
             continue
         fi
         # we found another one, yay!
-        evmvers=$( grep '^chain-evm-version=' ${BFAHOME:-/home/bfa/bfa}/lib/versions | head -1 )
+        evmvers=$( grep '^chain_evm_version=' ${BFAHOME:-/home/bfa/bfa}/lib/versions | head -1 )
         exec ${checkfile} ${evmvers/*=/--evm-version=} --combined-json abi,asm,ast,bin,bin-runtime,compact-format,devdoc,generated-sources,generated-sources-runtime,hashes,interface,metadata,opcodes,srcmap,srcmap-runtime,storage-layout,userdoc "$@"
         exit 1
     fi
diff --git a/lib/versions b/lib/versions
index cbe651a8b27e0b4c56b4b3e96b8f164976828403..e9ebb207411f97832d913611898a6cd999529cc3 100644
--- a/lib/versions
+++ b/lib/versions
@@ -1,3 +1,3 @@
 geth_tag=v1.8.27
 solidity_tag=v0.5.0
-chain-evm-version=byzantium
+chain_evm_version=byzantium