diff --git a/exerr/builder.go b/exerr/builder.go
index 517a74c..3681229 100644
--- a/exerr/builder.go
+++ b/exerr/builder.go
@@ -80,6 +80,10 @@ func New(t ErrorType, msg string) *Builder {
 }
 
 func Wrap(err error, msg string) *Builder {
+	if err == nil {
+		return &Builder{errorData: newExErr(CatSystem, TypeInternal, msg)} // prevent NPE if we call Wrap with err==nil
+	}
+
 	if !pkgconfig.RecursiveErrors {
 		v := FromError(err)
 		v.Message = msg
diff --git a/goextVersion.go b/goextVersion.go
index 4e57be4..46c0ef6 100644
--- a/goextVersion.go
+++ b/goextVersion.go
@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.231"
+const GoextVersion = "0.0.232"
 
-const GoextVersionTimestamp = "2023-08-08T16:10:31+0200"
+const GoextVersionTimestamp = "2023-08-08T18:01:00+0200"