diff --git a/apps/open-swe/src/graphs/programmer/nodes/open-pr.ts b/apps/open-swe/src/graphs/programmer/nodes/open-pr.ts
index 5cd80fb6..ec198f19 100644
--- a/apps/open-swe/src/graphs/programmer/nodes/open-pr.ts
+++ b/apps/open-swe/src/graphs/programmer/nodes/open-pr.ts
@@ -58,6 +58,8 @@ Here are all of the tasks you completed:
 
 {CUSTOM_RULES}
 
+You should not include any mention of an issue to close, unless explicitly requested by the user. The body will automatically include a mention of the issue to close.
+
 With all of this in mind, please use the \`open_pr\` tool to open a pull request.`;
 
 const formatCustomRulesPrompt = (pullRequestFormatting: string): string => {