diff --git a/sensorhandler.cpp b/sensorhandler.cpp
index 6503db8..b3381f3 100644
--- a/sensorhandler.cpp
+++ b/sensorhandler.cpp
@@ -117,7 +117,8 @@
     int r;
     r = mapper_get_service(bus, objname, &busname);
     if (r < 0) {
-        fprintf(stderr, "Failed to get system manager busname: %s\n", strerror(-r));
+        fprintf(stderr, "Failed to get %s busname: %s\n",
+                objname, strerror(-r));
         goto final;
     }
 
@@ -136,7 +137,8 @@
 
     r = mapper_get_service(bus, str2, &str1);
     if (r < 0) {
-        fprintf(stderr, "Failed to get item busname: %s\n", strerror(-r));
+        fprintf(stderr, "Failed to get %s busname: %s\n",
+                str2, strerror(-r));
         goto final;
     }