diff --git a/src/mca/bmi/sm/bmi_sm_component.c b/src/mca/bmi/sm/bmi_sm_component.c
index 14df1f314d..48dece1e8b 100644
--- a/src/mca/bmi/sm/bmi_sm_component.c
+++ b/src/mca/bmi/sm/bmi_sm_component.c
@@ -372,6 +372,10 @@ int mca_bmi_sm_component_progress(void)
             case MCA_BMI_SM_FRAG_ACK:
             {
                 /* completion callback */
+                frag->base.des_src = frag->base.des_dst;
+                frag->base.des_src_cnt = frag->base.des_dst_cnt;
+                frag->base.des_dst = NULL;
+                frag->base.des_dst_cnt = 0;
                 frag->base.des_cbfunc(&mca_bmi_sm[0].super, frag->endpoint, &frag->base, frag->rc);
                 break;
             }
@@ -379,6 +383,10 @@ int mca_bmi_sm_component_progress(void)
             {
                 /* recv upcall */
                 mca_bmi_sm_registration_t* reg = mca_bmi_sm[0].sm_reg + frag->tag;
+                frag->base.des_dst = frag->base.des_src;
+                frag->base.des_dst_cnt = frag->base.des_src_cnt;
+                frag->base.des_src = NULL;
+                frag->base.des_src_cnt = 0;
                 reg->cbfunc(&mca_bmi_sm[0].super,frag->tag,&frag->base,reg->cbdata);
                 frag->type = MCA_BMI_SM_FRAG_ACK;
                 MCA_BMI_SM_FIFO_WRITE(my_smp_rank,peer_smp_rank,frag,rc);