diff --git a/src/mapping.ts b/src/mapping.ts
index 16bc2e1e..367c5e4b 100644
--- a/src/mapping.ts
+++ b/src/mapping.ts
@@ -457,7 +457,7 @@ function handleType(type: Type, generics: Map<string, ElasticsearchValue>, path:
     return handleUnionType(type, new Map(generics), path, topTypeName, tags);
   }
   if (type instanceof ReferenceType) {
-    if (typeof type.reflection !== 'undefined') {
+    if (typeof premaps[type.name] === 'undefined' && typeof type.reflection !== 'undefined') {
       // there is really no way to make this typesafe, every element in DeclarationReflection is optional.
       return handleDeclarationReflection(type.reflection as DeclarationReflection,
         getReflectionGeneric(type, new Map(generics), path, topTypeName, tags), path, topTypeName, tags);
diff --git a/src/mappings/definitions/typemap.ts b/src/mappings/definitions/typemap.ts
index dd5b82ef..1e8845e0 100644
--- a/src/mappings/definitions/typemap.ts
+++ b/src/mappings/definitions/typemap.ts
@@ -32,7 +32,7 @@ export enum ElasticsearchDataType {
   geo_point = 'geo_point',
   geo_shape = 'geo_shape',
   completion = 'completion',
-  date_range = 'date_rage',
+  date_range = 'date_range',
   // integer_range = 'integer_range',
   // float_range = 'float_range',
   // long_range = 'long_range',
diff --git a/test/mapping-model/mappings/src/type-overrides.ts b/test/mapping-model/mappings/src/type-overrides.ts
new file mode 100644
index 00000000..945faab3
--- /dev/null
+++ b/test/mapping-model/mappings/src/type-overrides.ts
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {ThingType} from './types';
+import {MapAggTestOptions} from '../../MapAggTestOptions';
+import {ElasticsearchDataType} from '../../../../src/mappings/definitions/typemap';
+
+export interface SCISO8601DateRange {
+  bar: string;
+}
+
+/**
+ * @indexable
+ */
+export interface TypeOverrides {
+  foo: SCISO8601DateRange;
+
+  type: ThingType.TypeOverrides
+}
+
+export const typeOverridesTest: MapAggTestOptions = {
+  name: ThingType.TypeOverrides,
+  map: {
+    maps: {
+      foo: {
+        type: ElasticsearchDataType.date_range,
+      },
+    }
+  }
+};
diff --git a/test/mapping-model/mappings/src/types.ts b/test/mapping-model/mappings/src/types.ts
index c3015ac0..514e141b 100644
--- a/test/mapping-model/mappings/src/types.ts
+++ b/test/mapping-model/mappings/src/types.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 StApps
+ * Copyright (C) 2020-2021 StApps
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
  * Software Foundation, version 3.
@@ -38,4 +38,5 @@ export enum ThingType {
   InheritTags = 'inherit tags',
   TagsIgnoreCase = 'tags ignore case',
   TypeAlias = 'type alias',
+  TypeOverrides = 'type overrides',
 }
diff --git a/test/mapping.spec.ts b/test/mapping.spec.ts
index d2acafd2..9e5994b1 100644
--- a/test/mapping.spec.ts
+++ b/test/mapping.spec.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 StApps
+ * Copyright (C) 2020-2021 StApps
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
  * Software Foundation, version 3.
@@ -37,6 +37,7 @@ import {anyUnknownTest} from './mapping-model/mappings/src/any-unknown';
 import {tagsIgnoreCaseTest} from './mapping-model/mappings/src/tags-ignore-case';
 import {typeAliasTest} from './mapping-model/mappings/src/type-alias';
 import {dateAndRangeTest} from './mapping-model/mappings/src/date';
+import {typeOverridesTest} from './mapping-model/mappings/src/type-overrides';
 
 process.on('unhandledRejection', (error: unknown) => {
   if (error instanceof Error) {
@@ -174,4 +175,9 @@ export class MappingSpec {
   async 'Dates and date ranges should have the correct type'() {
     magAppInstance.testInterfaceAgainstPath(dateAndRangeTest);
   }
+
+  @test
+  async 'Premaps should support non-external types'() {
+    magAppInstance.testInterfaceAgainstPath(typeOverridesTest);
+  }
 }