diff --git a/bindings/d/types.d b/bindings/d/types.d
index 0fbcfb96b..4f7203757 100644
--- a/bindings/d/types.d
+++ b/bindings/d/types.d
@@ -854,7 +854,7 @@ struct bgfx_init_t
 	 * matching id.
 	 */
 	ushort deviceId;
-	ulong capabilities; /// Capabilities initialization mask.
+	ulong capabilities; /// Capabilities initialization mask (default: UINT64_MAX).
 	bool debug_; /// Enable device for debuging.
 	bool profile; /// Enable device for profiling.
 	bgfx_platform_data_t platformData; /// Platform data.
diff --git a/include/bgfx/c99/bgfx.h b/include/bgfx/c99/bgfx.h
index 4517d8a44..dd11a410e 100644
--- a/include/bgfx/c99/bgfx.h
+++ b/include/bgfx/c99/bgfx.h
@@ -668,7 +668,7 @@ typedef struct bgfx_init_s
      * matching id.
      */
     uint16_t             deviceId;
-    uint64_t             capabilities;       /** Capabilities initialization mask.        */
+    uint64_t             capabilities;       /** Capabilities initialization mask (default: UINT64_MAX). */
     bool                 debug;              /** Enable device for debuging.              */
     bool                 profile;            /** Enable device for profiling.             */
     bgfx_platform_data_t platformData;       /** Platform data.                           */