diff --git a/packages/truffle-debugger/lib/ast/sagas/index.js b/packages/truffle-debugger/lib/ast/sagas/index.js
index 480166cf4ff..08bb7bba4ca 100644
--- a/packages/truffle-debugger/lib/ast/sagas/index.js
+++ b/packages/truffle-debugger/lib/ast/sagas/index.js
@@ -47,6 +47,11 @@ function *handleEnter(sourceId, node, pointer, parentId) {
       debug("%s recording variable %o", pointer, node);
       yield *data.declare(node);
       break;
+    case "ContractDefinition":
+    case "StructDefinition":
+    case "EnumDefinition":
+      yield *data.defineType(node);
+      break;
   }
 }
 
diff --git a/packages/truffle-debugger/lib/data/actions/index.js b/packages/truffle-debugger/lib/data/actions/index.js
index 2b1398a195e..44a98a51be0 100644
--- a/packages/truffle-debugger/lib/data/actions/index.js
+++ b/packages/truffle-debugger/lib/data/actions/index.js
@@ -56,3 +56,11 @@ export function learnAddress(dummyAddress, address) {
     address
   };
 }
+
+export const DEFINE_TYPE = "DEFINE_TYPE";
+export function defineType(node) {
+  return {
+    type: DEFINE_TYPE,
+    node
+  };
+}
diff --git a/packages/truffle-debugger/lib/data/reducers.js b/packages/truffle-debugger/lib/data/reducers.js
index d543edd7c36..8c402e11b07 100644
--- a/packages/truffle-debugger/lib/data/reducers.js
+++ b/packages/truffle-debugger/lib/data/reducers.js
@@ -5,8 +5,6 @@ import { combineReducers } from "redux";
 
 import { stableKeccak256 } from "lib/helpers";
 
-import { Allocation } from "truffle-decode-utils";
-
 import * as actions from "./actions";
 
 const DEFAULT_SCOPES = {
@@ -70,16 +68,8 @@ function scopes(state = DEFAULT_SCOPES, action) {
 
 function userDefinedTypes(state = [], action) {
   switch (action.type) {
-    case actions.DECLARE:
-      const userDefinedNodeTypes =
-        ["StructDefinition","NodeDefinition","ContractDefinition"];
-         //note that interfaces and libraries are also ContractDefinition
-      if(userDefinedNodeTypes.includes(action.node.nodeType)) {
-        return [...state, action.node.id];
-      }
-      else {
-        return state;
-      }
+    case actions.DEFINE_TYPE:
+      return [...state, action.node.id];
     default:
       return state;
   }
diff --git a/packages/truffle-debugger/lib/data/sagas/index.js b/packages/truffle-debugger/lib/data/sagas/index.js
index fae39495d25..fc12103116b 100644
--- a/packages/truffle-debugger/lib/data/sagas/index.js
+++ b/packages/truffle-debugger/lib/data/sagas/index.js
@@ -92,6 +92,7 @@ function* tickSaga() {
       let allocation = allocations[node.id];
 
       debug("Contract definition case");
+      debug("allocations %O", allocations);
       debug("allocation %O", allocation);
       assignments = { byId: {} };
       for (let id in allocation.children) {
@@ -222,6 +223,10 @@ export function* reset() {
   yield put(actions.reset());
 }
 
+export function* defineType(node) {
+  yield put(actions.defineType(node));
+}
+
 export function* learnAddressSaga(dummyAddress, address) {
   debug("about to learn an address");
   yield put(actions.learnAddress(dummyAddress, address));
diff --git a/packages/truffle-debugger/lib/data/selectors/index.js b/packages/truffle-debugger/lib/data/selectors/index.js
index 9f71f75f52f..b5dc4932113 100644
--- a/packages/truffle-debugger/lib/data/selectors/index.js
+++ b/packages/truffle-debugger/lib/data/selectors/index.js
@@ -270,10 +270,13 @@ const data = createSelectorTree({
       _: createLeaf(["../userDefinedTypes/containers/ordered",
         "/views/scopes/inlined"], (types, scopes) => {
           let allocations = {};
-          for(id of types) {
+          debug("types %o", types);
+          for(let id of types) {
+            debug("in the allocation loop");
+            debug("id %d", id);
             let variables = scopes[id].variables;
-            let allocation = Allocation.allocateDeclarations(variables, scopes,
-              allocations);
+            let allocation = TruffleDecodeUtils.Allocation.allocateDeclarations(
+              variables, scopes, allocations);
             allocations[id] = allocation;
           }
           return allocations;