diff --git a/agent/loop.go b/agent/loop.go
index 4e72d0e..a64a137 100644
--- a/agent/loop.go
+++ b/agent/loop.go
@@ -341,7 +341,7 @@ func run(ctx context.Context, cfg agentConfig, state state) error {
 						result = "error: tool execution interrupted by user"
 						if cfg.PopInject != nil {
 							if injected := cfg.PopInject(); injected != "" {
-								result += "\n```\n\n<system-user-interruption>\n" + injected + "\n</system-user-interruption>\n```\n"
+								result += "\n\n<system-user-interruption>\n" + injected + "\n</system-user-interruption>"
 							}
 						}
 						emit(cfg, Event{Role: "tool", Name: tc.Name, Content: result, OutputFormat: toolOutputFormat(cfg, tc.Name)})
@@ -377,11 +377,7 @@ func run(ctx context.Context, cfg agentConfig, state state) error {
 			}
 			if cfg.PopInject != nil {
 				if injected := cfg.PopInject(); injected != "" {
-					fmt := toolOutputFormat(cfg, tc.Name)
-					if fmt != "" {
-						fmt = " " + fmt
-					}
-					suffix += "\n```\n\n<system-user-interruption>\n" + injected + "\n</system-user-interruption>\n```" + fmt + "\n"
+					suffix += "\n\n<system-user-interruption>\n" + injected + "\n</system-user-interruption>"
 				}
 			}
 			result += suffix