diff --git a/sipgen/gencode.c b/sipgen/gencode.c
index 7dcf1b1..f7d239e 100644
--- a/sipgen/gencode.c
+++ b/sipgen/gencode.c
@@ -2737,6 +2737,9 @@ static int generateEnumMemberTable(sipSpec *pt, moduleDef *mod, classDef *cd,
         prcode(fp,
 "    {%N, ", emd->pyname);
 
+        // enums in sip are always int, but can be an unsigned in C++ code
+        // therefore it is necessary to force the cast in the generated files
+        prcode(fp, "(int)");
         if (cd != NULL)
         {
             if (isProtectedEnum(emd->ed))