diff --git a/src/plugins/relay/relay-http.c b/src/plugins/relay/relay-http.c
index a498dd188..89dba653e 100644
--- a/src/plugins/relay/relay-http.c
+++ b/src/plugins/relay/relay-http.c
@@ -1340,7 +1340,7 @@ relay_http_send_error_json (struct t_relay_client *client,
     if (!error_msg)
         goto end;
 
-    if (weechat_asprintf (&json, "{\"error\": \"%s\"}", error_msg) < 0)
+    if (weechat_asprintf (&json, "{\"error\":\"%s\"}", error_msg) < 0)
         goto end;
 
     num_bytes = relay_http_send_json (client, return_code, message, headers,
diff --git a/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp b/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp
index f315724a6..74fe6bada 100644
--- a/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp
+++ b/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp
@@ -1015,9 +1015,9 @@ TEST(RelayApiProtocolWithClient, RecvHttpMissingPassword)
     STRCMP_EQUAL("HTTP/1.1 401 Unauthorized\r\n"
                  "Access-Control-Allow-Origin: *\r\n"
                  "Content-Type: application/json; charset=utf-8\r\n"
-                 "Content-Length: 29\r\n"
+                 "Content-Length: 28\r\n"
                  "\r\n"
-                 "{\"error\": \"Missing password\"}",
+                 "{\"error\":\"Missing password\"}",
                  data_sent[0]);
 }
 
@@ -1035,8 +1035,8 @@ TEST(RelayApiProtocolWithClient, RecvHttpInvalidPassword)
     STRCMP_EQUAL("HTTP/1.1 401 Unauthorized\r\n"
                  "Access-Control-Allow-Origin: *\r\n"
                  "Content-Type: application/json; charset=utf-8\r\n"
-                 "Content-Length: 29\r\n"
+                 "Content-Length: 28\r\n"
                  "\r\n"
-                 "{\"error\": \"Invalid password\"}",
+                 "{\"error\":\"Invalid password\"}",
                  data_sent[0]);
 }