diff --git a/features/lwipstack/mbed_lib.json b/features/lwipstack/mbed_lib.json
index 3df0cfa75c..4e1a9c87a4 100644
--- a/features/lwipstack/mbed_lib.json
+++ b/features/lwipstack/mbed_lib.json
@@ -168,7 +168,6 @@
         "RZ_A1_EMAC": {
             "tcpip-thread-stacksize": 1328,
             "default-thread-stacksize": 640,
-            "ppp-thread-stacksize": 896,
             "memp-num-tcp-seg": 32,
             "tcp-mss": 1440,
             "tcp-snd-buf": "(8 * TCP_MSS)",
@@ -179,7 +178,6 @@
         "CYW943012P6EVB_01": {
             "tcpip-thread-stacksize": 8192,
             "default-thread-stacksize": 640,
-            "ppp-thread-stacksize": 896,
             "memp-num-tcp-seg": 24,
             "tcp-socket-max": 10,
             "udp-socket-max":10,
@@ -193,7 +191,6 @@
         "CY8CPROTO_062_4343W": {
             "tcpip-thread-stacksize": 8192,
             "default-thread-stacksize": 640,
-            "ppp-thread-stacksize": 896,
             "memp-num-tcp-seg": 24,
             "tcp-socket-max": 10,
             "udp-socket-max":10,
@@ -207,7 +204,6 @@
         "CY8CKIT_062_WIFI_BT": {
             "tcpip-thread-stacksize": 8192,
             "default-thread-stacksize": 640,
-            "ppp-thread-stacksize": 896,
             "memp-num-tcp-seg": 48,
             "tcp-socket-max": 10,
             "udp-socket-max":10,
@@ -221,7 +217,6 @@
         "CY8CKIT_062S2_43012": {
            "tcpip-thread-stacksize": 8192,
            "default-thread-stacksize": 640,
-           "ppp-thread-stacksize": 896,
            "memp-num-tcp-seg": 24,
            "tcp-socket-max": 10,
            "udp-socket-max":10,
diff --git a/features/netsocket/NetworkInterface.h b/features/netsocket/NetworkInterface.h
index 1fc05cb0c5..117ea14cd2 100644
--- a/features/netsocket/NetworkInterface.h
+++ b/features/netsocket/NetworkInterface.h
@@ -339,14 +339,6 @@ public:
         return 0;
     }
 
-    /** Return pointer to a PPPInterface.
-     * @return Pointer to requested interface type or NULL if this class doesn't implement the interface.
-     */
-    virtual PPPInterface *pppInterface()
-    {
-        return 0;
-    }
-
     /** Return pointer to a CellularInterface.
      * @return Pointer to requested interface type or NULL if this class doesn't implement the interface.
      * @deprecated CellularBase migrated to CellularInterface - use cellularInterface()
diff --git a/features/netsocket/ppp/mbed_lib.json b/features/netsocket/ppp/mbed_lib.json
index 277baf2aa1..33bdb3df99 100644
--- a/features/netsocket/ppp/mbed_lib.json
+++ b/features/netsocket/ppp/mbed_lib.json
@@ -34,7 +34,19 @@
     },
     "target_overrides": {
         "RZ_A1_EMAC": {
-            "ppp-thread-stacksize": 896
+            "thread-stacksize": 896
+        },
+        "CYW943012P6EVB_01": {
+            "thread-stacksize": 896
+        },
+        "CY8CPROTO_062_4343W": {
+            "thread-stacksize": 896
+        },
+        "CY8CKIT_062_WIFI_BT": {
+            "thread-stacksize": 896
+        },
+        "CY8CKIT_062S2_43012": {
+            "thread-stacksize": 896
         }
     }
 }