diff --git a/qerror.c b/qerror.c
index 26eb70472e..d0aba61b2a 100644
--- a/qerror.c
+++ b/qerror.c
@@ -64,6 +64,10 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_DEVICE_INIT_FAILED,
         .desc      = "Device '%(device)' could not be initialized",
     },
+    {
+        .error_fmt = QERR_DEVICE_NOT_ENCRYPTED,
+        .desc      = "Device '%(device)' is not encrypted",
+    },
     {
         .error_fmt = QERR_DEVICE_LOCKED,
         .desc      = "Device '%(device)' is locked",
diff --git a/qerror.h b/qerror.h
index 88b297a96d..d96abe1d06 100644
--- a/qerror.h
+++ b/qerror.h
@@ -57,6 +57,9 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_DEVICE_ENCRYPTED \
     "{ 'class': 'DeviceEncrypted', 'data': { 'device': %s } }"
 
+#define QERR_DEVICE_NOT_ENCRYPTED \
+    "{ 'class': 'DeviceNotEncrypted', 'data': { 'device': %s } }"
+
 #define QERR_DEVICE_INIT_FAILED \
     "{ 'class': 'DeviceInitFailed', 'data': { 'device': %s } }"