diff --git a/ompi/mca/btl/gm/btl_gm.c b/ompi/mca/btl/gm/btl_gm.c
index 5e740bac46..7a60b7b879 100644
--- a/ompi/mca/btl/gm/btl_gm.c
+++ b/ompi/mca/btl/gm/btl_gm.c
@@ -28,6 +28,7 @@
 #include "btl_gm_proc.h"
 #include "btl_gm_endpoint.h"
 #include "datatype/convertor.h" 
+#include "datatype/datatype.h" 
 #include "mca/mpool/base/base.h" 
 #include "mca/mpool/mpool.h" 
 #include "ompi/proc/proc.h"
@@ -379,6 +380,7 @@ mca_btl_base_descriptor_t* mca_btl_gm_prepare_dst(
 #if (OMPI_MCA_BTL_GM_HAVE_RDMA_GET || OMPI_MCA_BTL_GM_HAVE_RDMA_PUT)
     mca_btl_gm_frag_t* frag;
     mca_mpool_base_module_t* mpool = btl->btl_mpool;
+    long lb;
     int rc;
 
     MCA_BTL_GM_FRAG_ALLOC_USER(btl, frag, rc);
@@ -386,8 +388,9 @@ mca_btl_base_descriptor_t* mca_btl_gm_prepare_dst(
         return NULL;
     }
 
+    ompi_ddt_type_lb(convertor, &lb);
     frag->segment.seg_len = *size;
-    frag->segment.seg_addr.pval = convertor->pBaseBuf + convertor->bConverted;
+    frag->segment.seg_addr.pval = convertor->pBaseBuf + lb + convertor->bConverted;
 
     frag->base.des_src = NULL;
     frag->base.des_src_cnt = 0;
diff --git a/ompi/mca/btl/mvapi/btl_mvapi.c b/ompi/mca/btl/mvapi/btl_mvapi.c
index 729ea7357f..de60778ad6 100644
--- a/ompi/mca/btl/mvapi/btl_mvapi.c
+++ b/ompi/mca/btl/mvapi/btl_mvapi.c
@@ -28,6 +28,7 @@
 #include "btl_mvapi_proc.h"
 #include "btl_mvapi_endpoint.h"
 #include "datatype/convertor.h" 
+#include "datatype/datatype.h" 
 #include "mca/mpool/base/base.h" 
 #include "mca/mpool/mpool.h" 
 #include "mca/mpool/mvapi/mpool_mvapi.h" 
@@ -454,6 +455,7 @@ mca_btl_base_descriptor_t* mca_btl_mvapi_prepare_dst(
     mca_btl_mvapi_module_t* mvapi_btl; 
     mca_btl_mvapi_frag_t* frag; 
     mca_mpool_mvapi_registration_t * vapi_reg; 
+    long lb;
     int rc; 
     
     mvapi_btl = (mca_btl_mvapi_module_t*) btl; 
@@ -465,9 +467,9 @@ mca_btl_base_descriptor_t* mca_btl_mvapi_prepare_dst(
         return NULL; 
     }
     
-    
+    ompi_ddt_type_lb(convertor, &lb);
     frag->segment.seg_len = *size; 
-    frag->segment.seg_addr.pval = convertor->pBaseBuf + convertor->bConverted; 
+    frag->segment.seg_addr.pval = convertor->pBaseBuf + lb + convertor->bConverted; 
     frag->base.des_flags = 0; 
 
     if(NULL!= vapi_reg){ 
diff --git a/ompi/mca/btl/openib/btl_openib.c b/ompi/mca/btl/openib/btl_openib.c
index 5bcc11b27e..493ba1993f 100644
--- a/ompi/mca/btl/openib/btl_openib.c
+++ b/ompi/mca/btl/openib/btl_openib.c
@@ -29,6 +29,7 @@
 #include "btl_openib_proc.h"
 #include "btl_openib_endpoint.h"
 #include "datatype/convertor.h" 
+#include "datatype/datatype.h" 
 #include "mca/mpool/base/base.h" 
 #include "mca/mpool/mpool.h" 
 #include "mca/mpool/openib/mpool_openib.h" 
@@ -455,6 +456,7 @@ mca_btl_base_descriptor_t* mca_btl_openib_prepare_dst(
     mca_btl_openib_frag_t* frag; 
     mca_mpool_openib_registration_t * openib_reg; 
     int rc; 
+    long lb;
     size_t reg_len; 
 
     openib_btl = (mca_btl_openib_module_t*) btl; 
@@ -466,9 +468,9 @@ mca_btl_base_descriptor_t* mca_btl_openib_prepare_dst(
         return NULL; 
     }
     
-    
+    ompi_ddt_type_lb(convertor, &lb);
     frag->segment.seg_len = *size; 
-    frag->segment.seg_addr.pval = convertor->pBaseBuf + convertor->bConverted; 
+    frag->segment.seg_addr.pval = convertor->pBaseBuf + lb + convertor->bConverted; 
     frag->base.des_flags = 0; 
 
     if(NULL!= openib_reg){ 
diff --git a/ompi/mca/btl/self/btl_self.c b/ompi/mca/btl/self/btl_self.c
index cd1575713c..2ba5d233c4 100644
--- a/ompi/mca/btl/self/btl_self.c
+++ b/ompi/mca/btl/self/btl_self.c
@@ -27,6 +27,7 @@
 
 #include "opal/threads/mutex.h"
 #include "ompi/datatype/convertor.h"
+#include "ompi/datatype/datatype.h"
 #include "include/sys/atomic.h"
 #include "opal/util/output.h"
 #include "opal/util/if.h"
@@ -261,6 +262,7 @@ struct mca_btl_base_descriptor_t* mca_btl_self_prepare_dst(
 {
     mca_btl_self_frag_t* frag;
     size_t max_data = *size;
+    long lb;
     int rc;
 
     MCA_BTL_SELF_FRAG_ALLOC_RDMA(frag, rc);
@@ -269,7 +271,8 @@ struct mca_btl_base_descriptor_t* mca_btl_self_prepare_dst(
     }
 
     /* setup descriptor to point directly to user buffer */
-    frag->segment.seg_addr.pval = (unsigned char*)convertor->pBaseBuf + convertor->bConverted;
+    ompi_ddt_type_lb( convertor->pDesc, &lb );
+    frag->segment.seg_addr.pval = (unsigned char*)convertor->pBaseBuf + lb + convertor->bConverted; 
     frag->segment.seg_len = reserve + max_data;
     frag->base.des_src = NULL;
     frag->base.des_src_cnt = 0;
diff --git a/ompi/mca/btl/tcp/btl_tcp.c b/ompi/mca/btl/tcp/btl_tcp.c
index 781d794463..dcbe525667 100644
--- a/ompi/mca/btl/tcp/btl_tcp.c
+++ b/ompi/mca/btl/tcp/btl_tcp.c
@@ -28,6 +28,7 @@
 #include "btl_tcp_proc.h"
 #include "btl_tcp_endpoint.h"
 #include "datatype/convertor.h" 
+#include "datatype/datatype.h" 
 #include "mca/mpool/base/base.h" 
 #include "mca/mpool/mpool.h" 
 #include "ompi/proc/proc.h"
@@ -330,6 +331,7 @@ mca_btl_base_descriptor_t* mca_btl_tcp_prepare_dst(
     size_t* size)
 {
     mca_btl_tcp_frag_t* frag;
+    long lb;
     int rc;
 
     MCA_BTL_TCP_FRAG_ALLOC_USER(frag, rc);
@@ -337,8 +339,9 @@ mca_btl_base_descriptor_t* mca_btl_tcp_prepare_dst(
         return NULL;
     }
 
+    ompi_ddt_type_lb(convertor, &lb);
     frag->segments->seg_len = *size;
-    frag->segments->seg_addr.pval = convertor->pBaseBuf + convertor->bConverted;
+    frag->segments->seg_addr.pval = convertor->pBaseBuf + lb + convertor->bConverted;
 
     frag->base.des_src = NULL;
     frag->base.des_src_cnt = 0;