diff --git a/ldms/src/sampler/slingshot_metrics/slingshot_metrics.c b/ldms/src/sampler/slingshot_metrics/slingshot_metrics.c
index b80637aa1..54425947c 100644
--- a/ldms/src/sampler/slingshot_metrics/slingshot_metrics.c
+++ b/ldms/src/sampler/slingshot_metrics/slingshot_metrics.c
@@ -593,8 +593,8 @@ static int sample(struct ldmsd_sampler *self)
                                             &counters.value[j],
                                             NULL);
                         if (rc != 0) {
-                                log_fn(LDMSD_LWARNING, SAMP": cxil_read_cntr() failed for device %s\n",
-                                       dev_info->device_name);
+                                log_fn(LDMSD_LWARNING, SAMP": cxil_read_cntr() failed for device %s, rc = %d\n",
+                                       dev_info->device_name, rc);
                                 cache_cxil_dev_close(dev);
                                 /* FIXME - we should really free the record here,
                                    and avoid adding it to the list, but there is