diff --git a/src/login/logind-inhibit.h b/src/login/logind-inhibit.h
index c00578a86e..cea67a08c5 100644
--- a/src/login/logind-inhibit.h
+++ b/src/login/logind-inhibit.h
@@ -29,7 +29,7 @@ struct Inhibitor {
 
         sd_event_source *event_source;
 
-        char *id;
+        const char *id;
         char *state_file;
 
         bool started;