diff --git a/src/stdio-bridge/stdio-bridge.c b/src/stdio-bridge/stdio-bridge.c
index 5d4ffa5e32..1a2099a8d1 100644
--- a/src/stdio-bridge/stdio-bridge.c
+++ b/src/stdio-bridge/stdio-bridge.c
@@ -125,7 +125,7 @@ static int run(int argc, char *argv[]) {
                 in_fd = SD_LISTEN_FDS_START;
                 out_fd = SD_LISTEN_FDS_START;
         } else
-                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Illegal number of file descriptors passed.");
+                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "More than one file descriptor was passed.");
 
         is_unix =
                 sd_is_socket(in_fd, AF_UNIX, 0, 0) > 0 &&