diff --git a/README.md b/README.md
index 44d9132..491eb44 100644
--- a/README.md
+++ b/README.md
@@ -294,6 +294,9 @@ version). Example:
 
     ipmi_bmc_info{firmware_revision="1.66",manufacturer_id="Dell Inc. (674)",system_firmware_version="2.6.1"} 1
 
+**Note:** some systems do not expose the system's firmware version, in which
+case it will be exported as `"N/A"`.
+
 ### Chassis Power State
 
 This metric is only provided if the `chassis` collector is enabled.
diff --git a/collector.go b/collector.go
index b809e86..c6e2c51 100644
--- a/collector.go
+++ b/collector.go
@@ -592,8 +592,9 @@ func collectBmcInfo(ch chan<- prometheus.Metric, target ipmiTarget) (int, error)
 	}
 	systemFirmwareVersion, err := getBMCInfoSystemFirmwareVersion(output)
 	if err != nil {
-		log.Errorf("Failed to parse bmc-info data from %s: %s", targetName(target.host), err)
-		return 0, err
+		// This one is not always available.
+		log.Debugf("Failed to parse bmc-info data from %s: %s", targetName(target.host), err)
+		systemFirmwareVersion = "N/A"
 	}
 	ch <- prometheus.MustNewConstMetric(
 		bmcInfo,