diff --git a/drm/DrmProperty.cpp b/drm/DrmProperty.cpp
index 4c5f44f..8e6f7e5 100644
--- a/drm/DrmProperty.cpp
+++ b/drm/DrmProperty.cpp
@@ -57,6 +57,8 @@
     type_ = DRM_PROPERTY_TYPE_OBJECT;
   else if (flags_ & DRM_MODE_PROP_BLOB)
     type_ = DRM_PROPERTY_TYPE_BLOB;
+  else if (flags_ & DRM_MODE_PROP_BITMASK)
+    type_ = DRM_PROPERTY_TYPE_BITMASK;
 }
 
 uint32_t DrmProperty::id() const {
@@ -87,6 +89,7 @@
     case DRM_PROPERTY_TYPE_OBJECT:
       return std::make_tuple(0, value_);
 
+    case DRM_PROPERTY_TYPE_BITMASK:
     default:
       return std::make_tuple(-EINVAL, 0);
   }