diff --git a/Lib/csharp/enumtypesafe.swg b/Lib/csharp/enumtypesafe.swg
index cf05abd6b..9c87ee802 100644
--- a/Lib/csharp/enumtypesafe.swg
+++ b/Lib/csharp/enumtypesafe.swg
@@ -80,7 +80,7 @@
   public readonly int swigValue;
 
   public static $csclassname swigToEnum(int swigValue) {
-    if (swigValue < swigValues.Length && swigValues[swigValue].swigValue == swigValue)
+    if (swigValue < swigValues.Length && swigValue >= 0 && swigValues[swigValue].swigValue == swigValue)
       return swigValues[swigValue];
     for (int i = 0; i < swigValues.Length; i++)
       if (swigValues[i].swigValue == swigValue)
diff --git a/Lib/java/enums.swg b/Lib/java/enums.swg
index 95074999e..50febe642 100644
--- a/Lib/java/enums.swg
+++ b/Lib/java/enums.swg
@@ -82,7 +82,7 @@
 
   public static $javaclassname swigToEnum(int swigValue) {
     $javaclassname[] swigValues = $javaclassname.class.getEnumConstants();
-    if (swigValue < swigValues.length && swigValues[swigValue].swigValue == swigValue)
+    if (swigValue < swigValues.length && swigValue >= 0 && swigValues[swigValue].swigValue == swigValue)
       return swigValues[swigValue];
     for ($javaclassname swigEnum : swigValues)
       if (swigEnum.swigValue == swigValue)
diff --git a/Lib/java/enumtypesafe.swg b/Lib/java/enumtypesafe.swg
index 0c9eb1db7..d119b3a70 100644
--- a/Lib/java/enumtypesafe.swg
+++ b/Lib/java/enumtypesafe.swg
@@ -84,7 +84,7 @@
   }
 
   public static $javaclassname swigToEnum(int swigValue) {
-    if (swigValue < swigValues.length && swigValues[swigValue].swigValue == swigValue)
+    if (swigValue < swigValues.length && swigValue >= 0 && swigValues[swigValue].swigValue == swigValue)
       return swigValues[swigValue];
     for (int i = 0; i < swigValues.length; i++)
       if (swigValues[i].swigValue == swigValue)