diff --git a/ompi/communicator/comm.c b/ompi/communicator/comm.c
index 430980023f..4db827af51 100644
--- a/ompi/communicator/comm.c
+++ b/ompi/communicator/comm.c
@@ -34,7 +34,6 @@
 #include "ompi/attribute/attribute.h"
 #include "ompi/communicator/communicator.h"
 #include "ompi/mca/pml/pml.h"
-#include "ompi/mca/ptl/base/ptl_base_comm.h"
 #include "ompi/request/request.h"
 
 /*
diff --git a/ompi/mca/pml/base/pml_base_bsend.h b/ompi/mca/pml/base/pml_base_bsend.h
index 90b594f560..615098d6db 100644
--- a/ompi/mca/pml/base/pml_base_bsend.h
+++ b/ompi/mca/pml/base/pml_base_bsend.h
@@ -24,7 +24,6 @@
 #if defined(c_plusplus) || defined(__cplusplus)
 extern "C" {
 #endif
-struct mca_ptl_base_send_request_t;
 
 OMPI_DECLSPEC int mca_pml_base_bsend_init(bool enable_mpi_threads);
 OMPI_DECLSPEC int mca_pml_base_bsend_fini(void);
diff --git a/ompi/mca/pml/base/pml_base_module_exchange.c b/ompi/mca/pml/base/pml_base_module_exchange.c
index 3be6ab2278..4703a53cf0 100644
--- a/ompi/mca/pml/base/pml_base_module_exchange.c
+++ b/ompi/mca/pml/base/pml_base_module_exchange.c
@@ -402,7 +402,7 @@ static int mca_pml_base_modex_subscribe(orte_process_name_t* name)
     }
     OPAL_UNLOCK(&mca_pml_base_modex_lock);
 
-    /* otherwise - subscribe to get this jobid's ptl contact info */
+    /* otherwise - subscribe to get this jobid's contact info */
     if (ORTE_SUCCESS != (rc = orte_ns.get_jobid(&jobid, name))) {
         ORTE_ERROR_LOG(rc);
         return rc;
diff --git a/ompi/mca/pml/base/pml_base_open.c b/ompi/mca/pml/base/pml_base_open.c
index d69867b4ac..7a12c8c401 100644
--- a/ompi/mca/pml/base/pml_base_open.c
+++ b/ompi/mca/pml/base/pml_base_open.c
@@ -25,7 +25,6 @@
 #include "ompi/constants.h"
 #include "ompi/mca/pml/pml.h"
 #include "ompi/mca/pml/base/base.h"
-#include "ompi/mca/ptl/base/base.h"
 
 /*
  * The following file was created by configure.  It contains extern
@@ -89,7 +88,4 @@ int mca_pml_base_open(void)
 
     mca_base_param_lookup_string(
         mca_base_param_register_string("pml",NULL,NULL,NULL,"ob1"), &mca_pml_base_pml);
-
-    /* All done, now let's start the PTLs */
-    return mca_ptl_base_open();
 }
diff --git a/ompi/mca/pml/dr/pml_dr_comm.h b/ompi/mca/pml/dr/pml_dr_comm.h
index 9531d9a3a2..340bb1c531 100644
--- a/ompi/mca/pml/dr/pml_dr_comm.h
+++ b/ompi/mca/pml/dr/pml_dr_comm.h
@@ -23,7 +23,6 @@
 
 #include "opal/threads/mutex.h"
 #include "opal/threads/condition.h"
-#include "ompi/mca/ptl/ptl.h"
 #include "opal/class/opal_list.h"
 #include "ompi/communicator/communicator.h"
 #include "ompi/proc/proc.h"
diff --git a/ompi/mca/pml/dr/pml_dr_recvfrag.c b/ompi/mca/pml/dr/pml_dr_recvfrag.c
index e07c7115bd..22bf191f56 100644
--- a/ompi/mca/pml/dr/pml_dr_recvfrag.c
+++ b/ompi/mca/pml/dr/pml_dr_recvfrag.c
@@ -254,7 +254,7 @@ do { \
 do {  \
     /* local variables */  \
     mca_pml_dr_recv_request_t *specific_recv, *wild_recv; \
-    mca_ptl_sequence_t wild_recv_seq, specific_recv_seq;  \
+    mca_pml_sequence_t wild_recv_seq, specific_recv_seq;  \
     int frag_tag, wild_recv_tag, specific_recv_tag;  \
   \
     /* initialization */  \
diff --git a/ompi/mca/pml/ob1/pml_ob1_comm.h b/ompi/mca/pml/ob1/pml_ob1_comm.h
index 23d4f53b38..d80ec1b225 100644
--- a/ompi/mca/pml/ob1/pml_ob1_comm.h
+++ b/ompi/mca/pml/ob1/pml_ob1_comm.h
@@ -23,7 +23,6 @@
 
 #include "opal/threads/mutex.h"
 #include "opal/threads/condition.h"
-#include "ompi/mca/ptl/ptl.h"
 #include "opal/class/opal_list.h"
 #include "ompi/proc/proc.h"
 #if defined(c_plusplus) || defined(__cplusplus)
diff --git a/ompi/mca/pml/ob1/pml_ob1_recvfrag.c b/ompi/mca/pml/ob1/pml_ob1_recvfrag.c
index b2596d32a3..7c0e07221c 100644
--- a/ompi/mca/pml/ob1/pml_ob1_recvfrag.c
+++ b/ompi/mca/pml/ob1/pml_ob1_recvfrag.c
@@ -222,7 +222,7 @@ do { \
 do {  \
     /* local variables */  \
     mca_pml_ob1_recv_request_t *specific_recv, *wild_recv; \
-    mca_ptl_sequence_t wild_recv_seq, specific_recv_seq;  \
+    mca_pml_sequence_t wild_recv_seq, specific_recv_seq;  \
     int frag_tag, wild_recv_tag, specific_recv_tag;  \
   \
     /* initialization */  \
diff --git a/ompi/mca/pml/pml.h b/ompi/mca/pml/pml.h
index a5bc14ba8d..b3eb76ad60 100644
--- a/ompi/mca/pml/pml.h
+++ b/ompi/mca/pml/pml.h
@@ -72,8 +72,7 @@ extern "C" {
  * PML component types
  */
 
-struct mca_ptl_base_modulet;
-struct mca_ptl_addr_t;
+typedef uint64_t mca_pml_sequence_t;
 
 struct mca_pml_proc_t {
     opal_list_item_t super;
@@ -177,7 +176,7 @@ typedef int (*mca_pml_base_module_enable_fn_t)(
 
 /**
  * For non-threaded case, provides MCA the opportunity to
- * progress outstanding requests on all ptls.
+ * progress outstanding requests on all btls.
  *
  * @return         OMPI_SUCCESS or failure status.
 */
diff --git a/ompi/tools/ompi_info/components.cc b/ompi/tools/ompi_info/components.cc
index 69902b25ae..59f5ee4e22 100644
--- a/ompi/tools/ompi_info/components.cc
+++ b/ompi/tools/ompi_info/components.cc
@@ -56,8 +56,6 @@
 #include "ompi/mca/bml/base/base.h"
 #include "ompi/mca/rcache/rcache.h"
 #include "ompi/mca/rcache/base/base.h"
-#include "ompi/mca/ptl/ptl.h"
-#include "ompi/mca/ptl/base/base.h"
 #include "ompi/mca/btl/btl.h"
 #include "ompi/mca/btl/base/base.h"
 #include "ompi/mca/topo/topo.h"
@@ -248,11 +246,6 @@ void ompi_info::open_components()
   ompi_osc_base_open();
   component_map["osc"] = &ompi_osc_base_open_components;
 
-  /* mca_ptl_base_open() should not be called directly. This call is performed
-   * in the PML base open.
-   */
-  component_map["ptl"] = &mca_ptl_base_components_opened;
-
   mca_btl_base_open();
   component_map["btl"] = &mca_btl_base_components_opened;
 
diff --git a/ompi/tools/ompi_info/ompi_info.cc b/ompi/tools/ompi_info/ompi_info.cc
index ae8e69f603..f7f35e3e89 100644
--- a/ompi/tools/ompi_info/ompi_info.cc
+++ b/ompi/tools/ompi_info/ompi_info.cc
@@ -180,7 +180,6 @@ int main(int argc, char *argv[])
   ompi_info::mca_types.push_back("pml");
   ompi_info::mca_types.push_back("bml");
   ompi_info::mca_types.push_back("rcache");
-  ompi_info::mca_types.push_back("ptl");
   ompi_info::mca_types.push_back("btl");
   ompi_info::mca_types.push_back("topo");
   ompi_info::mca_types.push_back("osc");