diff --git a/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
index 0b0ab4814..8a75414d5 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
@@ -905,7 +905,7 @@ class CppCompiler(
       outHdr.puts(s"static const std::set<std::underlying_type<$enumClass>::type> _values_$enumClass;")
       val enumClassAbs = types2class(curClass ++ List(enumName))
       val valuesSetAbsRef = s"${types2class(curClass)}::_values_$enumClass"
-      val setEntriesStr = enumColl.map { case (id, _) => s"$id" }.mkString(", ")
+      val setEntriesStr = enumColl.map { case (id, _) => translator.doIntLiteral(id) }.mkString(", ")
       outSrc.puts(s"const std::set<std::underlying_type<$enumClassAbs>::type> $valuesSetAbsRef{$setEntriesStr};")
     }
   }
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
index 20453406f..884737312 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
@@ -440,7 +440,7 @@ class PHPCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
       out.puts(s"const ${value2Const(label.name)} = ${translator.doIntLiteral(id)};")
     }
     out.puts
-    val arrayEntriesStr = enumColl.map { case (id, _) => s"$id => true" }.mkString(", ")
+    val arrayEntriesStr = enumColl.map { case (id, _) => s"${translator.doIntLiteral(id)} => true" }.mkString(", ")
     out.puts(s"private const _VALUES = [$arrayEntriesStr];")
     out.puts
     out.puts("public static function isDefined(int $v): bool {")