diff --git a/packages/cosmic-swingset/Makefile b/packages/cosmic-swingset/Makefile
index 8b68e5cc5ef..53511d4cd49 100644
--- a/packages/cosmic-swingset/Makefile
+++ b/packages/cosmic-swingset/Makefile
@@ -66,7 +66,7 @@ scenario2-setup-nobuild:
 	$(AGCH) --home=t1/n0 --keyring-dir=t1/bootstrap gentx --keyring-backend=test bootstrap 73000000ubld --chain-id=$(CHAIN_ID)
 	$(AGCH) --home=t1/n0 collect-gentxs
 	$(AGCH) --home=t1/n0 validate-genesis
-	../agoric-cli/bin/agoric set-defaults --export-metrics ag-chain-cosmos t1/n0/config
+	../agoric-cli/bin/agoric set-defaults --export-metrics --bootstrap-address=`cat t1/bootstrap-address` ag-chain-cosmos t1/n0/config
 	# Set the chain address in all the ag-solos.
 	jq '. + { genesis_time: "$(GENESIS_TIME)", initial_height: "$(INITIAL_HEIGHT)" }' t1/n0/config/genesis.json > t1/n0/config/genesis2.json
 	mv t1/n0/config/genesis2.json t1/n0/config/genesis.json
diff --git a/packages/cosmic-swingset/bin/ag-nchainz b/packages/cosmic-swingset/bin/ag-nchainz
index 02513dab1d4..46669d5e821 100755
--- a/packages/cosmic-swingset/bin/ag-nchainz
+++ b/packages/cosmic-swingset/bin/ag-nchainz
@@ -55,7 +55,6 @@ testnet)
   portstart=$(( $BASE_PORT + $i * $NUM_SOLOS ))
   portend=$(( $portstart + $NUM_SOLOS - 1 ))
   SOLO_ADDRS=()
-  SOLO_NAMES=()
   POWER_FLAGS='[\"agoric.vattp\"]'
   egresses=
   sep=''
@@ -64,6 +63,7 @@ testnet)
     echo "Initializing ag-solo in $solo"
 		$SOLO init $solo --webport=$port
     addr=$(cat $solo/ag-cosmos-helper-address)
+    SOLO_ADDRS+=( "$addr" )
 		$DAEMON add-genesis-account --home=$n0d \
       $($CLI --home=$solo/$CLI-statedir --keyring-backend=test keys show -a ag-solo) \
       1000urun,1provisionpass
@@ -73,7 +73,8 @@ testnet)
 	done
   for node in `ls -d $chainid/n* 2>/dev/null || true`; do
     [[ "$node/$DAEMON" == $n0d ]] || cp $n0d/config/genesis.json $node/$DAEMON/config/genesis.json
-	  "$thisdir/../../agoric-cli/bin/agoric" set-defaults ag-chain-cosmos $node/$DAEMON/config
+	  "$thisdir/../../agoric-cli/bin/agoric" set-defaults --bootstrap-address=${SOLO_ADDRS[0]} \
+      ag-chain-cosmos $node/$DAEMON/config
     cp "$node/$DAEMON/config/genesis.json" "$node/$DAEMON/config/genesis-orig.json"
     # Append the egresses to the genesis and reset bond_denom.
     jq ".*{app_state:{staking:{params:{bond_denom:\"stake\"}},swingset:{storage:{$egresses}}}}" \
diff --git a/packages/cosmic-swingset/scripts/single-node.sh b/packages/cosmic-swingset/scripts/single-node.sh
index 3e33a0df02a..2d40a5ff452 100755
--- a/packages/cosmic-swingset/scripts/single-node.sh
+++ b/packages/cosmic-swingset/scripts/single-node.sh
@@ -44,7 +44,7 @@ case $DAEMON in
 ag-chain-cosmos)
   # For Agoric
   DIR=$(dirname -- "${BASH_SOURCE[0]}")
-  "$DIR/../../agoric-cli/bin/agoric" set-defaults ag-chain-cosmos ~/.$DAEMON/config
+  "$DIR/../../agoric-cli/bin/agoric" set-defaults --bootstrap-address=$GENACCT ag-chain-cosmos ~/.$DAEMON/config
   ;;
 esac