diff --git a/src/main/java/org/kohsuke/github/GHPullRequest.java b/src/main/java/org/kohsuke/github/GHPullRequest.java
index b5f02b964c..1d8545f114 100644
--- a/src/main/java/org/kohsuke/github/GHPullRequest.java
+++ b/src/main/java/org/kohsuke/github/GHPullRequest.java
@@ -393,7 +393,7 @@ public enum MergeMethod{ MERGE, SQUASH, REBASE }
 
     private void fetchIssue() throws IOException {
         if (!fetchedIssueDetails) {
-            new Requester(root).to(getIssuesApiRoute(), this);
+            new Requester(root).method("GET").to(getIssuesApiRoute(), this);
             fetchedIssueDetails = true;
         }
     }