diff --git a/src/aig/gia/giaSweeper.c b/src/aig/gia/giaSweeper.c
index 3f5979828..91b4c17b6 100644
--- a/src/aig/gia/giaSweeper.c
+++ b/src/aig/gia/giaSweeper.c
@@ -490,7 +490,7 @@ Gia_Man_t * Gia_SweeperCleanup( Gia_Man_t * p, char * pCommLime )
     sat_solver_addclause( pSwp->pSat, &iLit, &iLit + 1 );
     pSwp->timeStart    = clock();
     // return the result
-    pNew = p->pData; p->pData = NULL;
+    pNew->pData = p->pData; p->pData = NULL;
     Gia_ManStop( p );
     return pNew;
 }