diff --git a/workspace-server/internal/registry/provisiontimeout.go b/workspace-server/internal/registry/provisiontimeout.go
index 8c8bd5d6..0201eb9b 100644
--- a/workspace-server/internal/registry/provisiontimeout.go
+++ b/workspace-server/internal/registry/provisiontimeout.go
@@ -127,9 +127,15 @@ func sweepStuckProvisioning(ctx context.Context, emitter ProvisionTimeoutEmitter
 			continue
 		}
 		log.Printf("Provision-timeout sweep: %s stuck in provisioning > %s — marked failed", id, timeout)
-		if emitErr := emitter.RecordAndBroadcast(ctx, "WORKSPACE_PROVISION_TIMEOUT", id, map[string]interface{}{
-			"error":         msg,
-			"timeout_secs":  timeoutSec,
+		// Emit as WORKSPACE_PROVISION_FAILED, not _TIMEOUT, because the
+		// canvas event handler only flips node state on the _FAILED case.
+		// A separate event type was considered but the UI reaction is
+		// identical either way — operators who need to distinguish can
+		// tell from the `source` payload field.
+		if emitErr := emitter.RecordAndBroadcast(ctx, "WORKSPACE_PROVISION_FAILED", id, map[string]interface{}{
+			"error":        msg,
+			"timeout_secs": timeoutSec,
+			"source":       "provision_timeout_sweep",
 		}); emitErr != nil {
 			log.Printf("Provision-timeout sweep: broadcast failed for %s: %v", id, emitErr)
 		}
diff --git a/workspace-server/internal/registry/provisiontimeout_test.go b/workspace-server/internal/registry/provisiontimeout_test.go
index 07a04a4e..a5009a56 100644
--- a/workspace-server/internal/registry/provisiontimeout_test.go
+++ b/workspace-server/internal/registry/provisiontimeout_test.go
@@ -58,8 +58,8 @@ func TestSweepStuckProvisioning_FlipsOverdue(t *testing.T) {
 	if emit.count() != 1 {
 		t.Fatalf("expected 1 event, got %d", emit.count())
 	}
-	if emit.events[0].Type != "WORKSPACE_PROVISION_TIMEOUT" {
-		t.Errorf("event type = %q, want WORKSPACE_PROVISION_TIMEOUT", emit.events[0].Type)
+	if emit.events[0].Type != "WORKSPACE_PROVISION_FAILED" {
+		t.Errorf("event type = %q, want WORKSPACE_PROVISION_FAILED", emit.events[0].Type)
 	}
 	if emit.events[0].WorkspaceID != "ws-stuck" {
 		t.Errorf("workspace id = %q, want ws-stuck", emit.events[0].WorkspaceID)
@@ -72,7 +72,7 @@ func TestSweepStuckProvisioning_FlipsOverdue(t *testing.T) {
 // TestSweepStuckProvisioning_RaceSafe covers the case where UPDATE affects
 // 0 rows because the workspace flipped to online (or got restarted) between
 // the SELECT and the UPDATE. We should skip the event, not emit a false
-// WORKSPACE_PROVISION_TIMEOUT.
+// WORKSPACE_PROVISION_FAILED.
 func TestSweepStuckProvisioning_RaceSafe(t *testing.T) {
 	mock := setupTestDB(t)