diff --git a/test/offline_management.sh b/test/offline_management.sh
index 01be21e0..862323d2 100755
--- a/test/offline_management.sh
+++ b/test/offline_management.sh
@@ -5,13 +5,14 @@ set -e
 a="tmp_a.json"
 b="tmp_b.json"
 
+base_url="http://localhost:3434"
 auditor_pub=$(<"./test/auditor_public_key")
 master_key="./default/master_offline_private_key"
 zero_euro="EUR:0.0"
 
 dune exec offline -- download --output $a
 dune exec offline -- sign --master_key $master_key --input $a --output $b
-dune exec offline -- upload --input $b --url "/management/keys"
+dune exec offline -- upload --input $b --url $base_url"/management/keys"
 
 dune exec offline -- enable-auditor \
 --master_key $master_key \
@@ -20,7 +21,7 @@ dune exec offline -- enable-auditor \
 --auditor_name "auditor example" \
 --auditor_pub $auditor_pub \
 --validity_start 0
-dune exec offline -- upload --input $b --url "/management/auditors"
+dune exec offline -- upload --input $b --url $base_url"/management/auditors"
 
 dune exec offline -- wire-fee \
 --master_key $master_key \
@@ -30,7 +31,7 @@ dune exec offline -- wire-fee \
 --fee_end 99999999 \
 --closing_fee $zero_euro \
 --wire_fee $zero_euro
-dune exec offline -- upload --input $b --url "/management/wire-fee"
+dune exec offline -- upload --input $b --url $base_url"/management/wire-fee"
 
 dune exec offline -- global-fees \
 --master_key $master_key \
@@ -43,7 +44,7 @@ dune exec offline -- global-fees \
 --history_expiration 9999999 \
 --purse_account_limit 1 \
 --purse_timeout 9999999
-dune exec offline -- upload --input $b --url "/management/global-fees"
+dune exec offline -- upload --input $b --url $base_url"/management/global-fees"
 
 rm $a
 rm $b
diff --git a/tools/offline_impl.ml b/tools/offline_impl.ml
index f56f4bc5..db32c67e 100644
--- a/tools/offline_impl.ml
+++ b/tools/offline_impl.ml
@@ -161,7 +161,8 @@ let read_master_key_file filename =
   let* master_key = read_file filename in
   Crypto.EddsaPrivateKey.of_octets master_key
 
-let base_url = Uri.of_string "http://localhost:3434/"
+let base_url = Uri.of_string
+"http://localhost:3434/"
 let full_url path = Uri.with_path base_url path |> Uri.to_string
 
 let download ~output =