diff --git a/cimditprofile.h b/cimditprofile.h
index da0a96d..b080b6d 100644
--- a/cimditprofile.h
+++ b/cimditprofile.h
@@ -284,7 +284,13 @@ class CimditProfile {
   /// timeout of submitted string
   uint32_t m_userTimeout;
 
-  float m_relMouseX, m_relMouseY;
+  /// relative mouse movement X
+  float m_relMouseX;
+
+  /// relative mouse movement Y
+  float m_relMouseY;
+
+  /// offset of custom image
   uint16_t m_customImage;
 };