diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index 548e817105..8699ed5ce2 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -1060,13 +1060,13 @@ static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_
 
         case SD_BUS_TYPE_BOOLEAN: {
                 unsigned b;
-                int *p = userdata;
+                bool *p = userdata;
 
                 r = sd_bus_message_read_basic(m, type, &b);
                 if (r < 0)
                         return r;
 
-                *p = b;
+                *p = !!b;
                 return 0;
         }