diff --git a/libmapper/workaround/systemd.h b/libmapper/workaround/systemd.h
index 1b32753..51fb2e3 100644
--- a/libmapper/workaround/systemd.h
+++ b/libmapper/workaround/systemd.h
@@ -2,5 +2,8 @@
 #include <systemd/sd-bus.h>
 
 int sd_bus_message_append_cmdline(sd_bus_message *m, const char *signature,
-    char ***x) { return 0; }
+                                  char ***x)
+{
+    return 0;
+}
 #endif