diff --git a/cfg/global.yaml b/cfg/global.yaml
index 8f76dd8..0dda41b 100644
--- a/cfg/global.yaml
+++ b/cfg/global.yaml
@@ -68,6 +68,7 @@ env:
     - DISPLAY
     - WAYLAND_DISPLAY
     - AGENT_ID
+    - ANVILLM_BACKEND
 advanced:
     ldd: false
     add_exec: true
diff --git a/internal/backend/tmux/tmux.go b/internal/backend/tmux/tmux.go
index f7f63c3..ba5b116 100644
--- a/internal/backend/tmux/tmux.go
+++ b/internal/backend/tmux/tmux.go
@@ -258,10 +258,10 @@ func (b *Backend) CreateSession(ctx context.Context, opts backend.SessionOptions
 		return nil, fmt.Errorf("failed to change directory: %w", err)
 	}
 
-	// Export AGENT_ID to shell environment
-	if err := sendKeys(target, fmt.Sprintf("export AGENT_ID=%s", id), "C-m"); err != nil {
+	// Export AGENT_ID and ANVILLM_BACKEND to shell environment
+	if err := sendKeys(target, fmt.Sprintf("export AGENT_ID=%s ANVILLM_BACKEND=%s", id, b.cfg.Name), "C-m"); err != nil {
 		killWindow(b.tmuxSession, windowName)
-		return nil, fmt.Errorf("failed to export AGENT_ID: %w", err)
+		return nil, fmt.Errorf("failed to export AGENT_ID/ANVILLM_BACKEND: %w", err)
 	}
 
 	// Send the command
diff --git a/internal/backends/ollama.go b/internal/backends/ollie.go
similarity index 100%
rename from internal/backends/ollama.go
rename to internal/backends/ollie.go