diff --git a/.cppcheck.suppress b/.cppcheck.suppress
index e0e3a7f..ca019ff 100644
--- a/.cppcheck.suppress
+++ b/.cppcheck.suppress
@@ -1 +1,2 @@
-unusedFunction
\ No newline at end of file
+unusedFunction
+duplInheritedMember
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea54dd7..2c5d8a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 ## Next Release
 
+### Enum
+
+- define only forward declaration if MOC_RUN compilation is processing enum definition
+
 <!-- insertion marker -->
 ## [0.1.1](https://github.com/repo/owner/releases/tag/0.1.1) - 2026-03-09
 
diff --git a/include/mstd/enum.hpp b/include/mstd/enum.hpp
index ba55f88..b6f2087 100644
--- a/include/mstd/enum.hpp
+++ b/include/mstd/enum.hpp
@@ -49,6 +49,7 @@
 // ------------------------------------------------------------
 // Main macro
 // ------------------------------------------------------------
+#ifndef Q_MOC_RUN
 #define MSTD_ENUM(EnumName, Underlying, LIST)                               \
     enum class EnumName : Underlying                                        \
     {                                                                       \
@@ -118,6 +119,9 @@
     };                                                                      \
                                                                             \
     static constexpr EnumName##Meta enum_meta(EnumName) { return {}; }
+#else
+#define MSTD_ENUM(EnumName, Underlying, LIST) enum class EnumName : Underlying;
+#endif
 
 #define MSTD_ENUM_BITFLAG(EnumName, Underlying, LIST)                   \
     MSTD_ENUM(EnumName, Underlying, LIST)                               \