diff --git a/src/core/snmp/mib2.c b/src/core/snmp/mib2.c
index 11a055ee..073ca91c 100644
--- a/src/core/snmp/mib2.c
+++ b/src/core/snmp/mib2.c
@@ -188,8 +188,8 @@ static struct mib_array_node udpentry = {
 };
 
 static struct mib_array_node_entry udptable_node = {1, &udpentry.node};
-static struct mib_ram_array_node udptable = {
-  { MIB_NODE_RA },
+static struct mib_array_node udptable = {
+  { MIB_NODE_AR },
   0,
   &udptable_node
 };
@@ -240,8 +240,8 @@ static struct mib_array_node tcpconnentry = {
 };
 
 static struct mib_array_node_entry tcpconntable_node = {1, &tcpconnentry.node};
-static struct mib_ram_array_node tcpconntable = {
-  { MIB_NODE_RA },
+static struct mib_array_node tcpconntable = {
+  { MIB_NODE_AR },
 /** @todo update maxlength when inserting / deleting from table
    0 when table is empty, 1 when more than one entry */
   0,
@@ -325,8 +325,8 @@ static struct mib_array_node ipntomentry = {
 };
 
 static struct mib_array_node_entry ipntomtable_node = {1, &ipntomentry.node};
-static struct mib_ram_array_node ipntomtable = {
-  { MIB_NODE_RA },
+static struct mib_array_node ipntomtable = {
+  { MIB_NODE_AR },
   0,
   &ipntomtable_node
 };
@@ -360,8 +360,8 @@ static struct mib_array_node iprteentry = {
 };
 
 static struct mib_array_node_entry iprtetable_node = {1, &iprteentry.node};
-static struct mib_ram_array_node iprtetable = {
-  { MIB_NODE_RA },
+static struct mib_array_node iprtetable = {
+  { MIB_NODE_AR },
   0,
   &iprtetable_node
 };
@@ -393,8 +393,8 @@ static struct mib_array_node ipaddrentry = {
 };
 
 static struct mib_array_node_entry ipaddrtable_node = {1, &ipaddrentry.node};
-static struct mib_ram_array_node ipaddrtable = {
-  { MIB_NODE_RA },
+static struct mib_array_node ipaddrtable = {
+  { MIB_NODE_AR },
   0,
   &ipaddrtable_node
 };
@@ -460,8 +460,8 @@ static struct mib_array_node attable = {
 
 /* at .1.3.6.1.2.1.3 */
 static struct mib_array_node_entry mib2_at_node = {1, &attable.node};
-static struct mib_ram_array_node at = {
-  { MIB_NODE_RA },
+static struct mib_array_node at = {
+  { MIB_NODE_AR },
   0,
   &mib2_at_node
 };
@@ -504,8 +504,8 @@ static struct mib_array_node ifentry = {
 };
 
 static struct mib_array_node_entry iftable_node = {1, &ifentry.node};
-static struct mib_ram_array_node iftable = {
-  { MIB_NODE_RA },
+static struct mib_array_node iftable = {
+  { MIB_NODE_AR },
   0,
   &iftable_node
 };
diff --git a/src/core/snmp/mib_structs.c b/src/core/snmp/mib_structs.c
index 10e85f2c..7048418b 100644
--- a/src/core/snmp/mib_structs.c
+++ b/src/core/snmp/mib_structs.c
@@ -458,7 +458,7 @@ snmp_search_tree(const struct mib_node *node, u8_t ident_len, s32_t *ident, stru
   while (node != NULL)
   {
     node_type = node->node_type;
-    if ((node_type == MIB_NODE_AR) || (node_type == MIB_NODE_RA))
+    if (node_type == MIB_NODE_AR)
     {
       const struct mib_array_node *an;
       u16_t i;
@@ -652,7 +652,7 @@ empty_table(const struct mib_node *node)
         empty = 1;
       }
     }
-    else if ((node_type == MIB_NODE_AR) || (node_type == MIB_NODE_RA))
+    else if (node_type == MIB_NODE_AR)
     {
       const struct mib_array_node *an;
       an = (const struct mib_array_node*)(const void*)node;
@@ -689,7 +689,7 @@ snmp_expand_tree(const struct mib_node *node, u8_t ident_len, s32_t *ident, stru
   {
     climb_tree = 0;
     node_type = node->node_type;
-    if ((node_type == MIB_NODE_AR) || (node_type == MIB_NODE_RA))
+    if (node_type == MIB_NODE_AR)
     {
       const struct mib_array_node *an;
       u16_t i;
diff --git a/src/include/lwip/snmp_structs.h b/src/include/lwip/snmp_structs.h
index 94fc4eb8..b75f9afc 100644
--- a/src/include/lwip/snmp_structs.h
+++ b/src/include/lwip/snmp_structs.h
@@ -93,9 +93,7 @@ struct snmp_name_ptr
 #define MIB_NODE_SC 0x01
 /** MIB const array node */
 #define MIB_NODE_AR 0x02
-/** MIB array node (mem_malloced from RAM) */
-#define MIB_NODE_RA 0x03
-/** MIB list root node (mem_malloced from RAM) */
+/** MIB list root node (memp_malloced from RAM) */
 #define MIB_NODE_LR 0x04
 /** MIB node for external objects */
 #define MIB_NODE_EX 0x05
@@ -129,7 +127,7 @@ struct mib_array_node_entry
   const struct mib_node *nptr;
 };
 
-/** derived node, points to a fixed size const array
+/** derived node, points to a fixed size array
     of sub-identifiers plus a 'child' pointer */
 struct mib_array_node
 {
@@ -141,18 +139,6 @@ struct mib_array_node
   const struct mib_array_node_entry *entries;
 };
 
-/** derived node, points to a fixed size mem_malloced array
-    of sub-identifiers plus a 'child' pointer */
-struct mib_ram_array_node
-{
-  /* inherited "base class" members */
-  struct mib_node node;
-
-  /* additional struct members */
-  u16_t maxlength;
-  struct mib_array_node_entry *entries;
-};
-
 struct mib_list_node
 {
   struct mib_list_node *prev;