diff --git a/src/main/java/org/kohsuke/github/GHRepository.java b/src/main/java/org/kohsuke/github/GHRepository.java
index fbd64709a..c74d9095a 100644
--- a/src/main/java/org/kohsuke/github/GHRepository.java
+++ b/src/main/java/org/kohsuke/github/GHRepository.java
@@ -1152,7 +1152,7 @@ public class GHRepository extends GHObject {
         try {
             payload = content.getBytes("UTF-8");
         } catch (UnsupportedEncodingException ex) {
-            throw  new IOException("UTF-8 encoding is not supported", ex);
+            throw (IOException) new IOException("UTF-8 encoding is not supported").initCause(ex);
         }
         return createContent(payload, commitMessage, path, branch);
     }