diff --git a/lib/services/devices/deviceService.js b/lib/services/devices/deviceService.js
index 86bbe051e..d23563813 100644
--- a/lib/services/devices/deviceService.js
+++ b/lib/services/devices/deviceService.js
@@ -178,6 +178,9 @@ function mergeDeviceWithConfiguration(fields, defaults, deviceData, configuratio
     if (configuration && configuration.ngsiVersion) {
         deviceData.ngsiVersion = configuration.ngsiVersion;
     }
+    if (configuration && configuration.explicitAttrs !== undefined && deviceData.explicitAttrs === undefined) {
+        deviceData.explicitAttrs = configuration.explicitAttrs;
+    }
     if (configuration && configuration.entityNameExp !== undefined) {
         deviceData.entityNameExp = configuration.entityNameExp;
     }