diff --git a/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddCheckpoint.tsx b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddCheckpoint.tsx
index 8a525c543b..85dfb0ed8b 100644
--- a/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddCheckpoint.tsx
+++ b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddCheckpoint.tsx
@@ -14,6 +14,7 @@ import { setAdvancedAddScanModel } from '../../store/modelManagerSlice';
 import BaseModelSelect from '../shared/BaseModelSelect';
 import CheckpointConfigsSelect from '../shared/CheckpointConfigsSelect';
 import ModelVariantSelect from '../shared/ModelVariantSelect';
+import { getModelName } from './util';
 
 type AdvancedAddCheckpointProps = {
   model_path?: string;
@@ -28,7 +29,7 @@ export default function AdvancedAddCheckpoint(
 
   const advancedAddCheckpointForm = useForm<CheckpointModelConfig>({
     initialValues: {
-      model_name: model_path?.match(/[^\\/]+$/)?.[0]?.split('.')[0] ?? '',
+      model_name: model_path ? getModelName(model_path) : '',
       base_model: 'sd-1',
       model_type: 'main',
       path: model_path ? model_path : '',
@@ -102,10 +103,7 @@ export default function AdvancedAddCheckpoint(
           {...advancedAddCheckpointForm.getInputProps('path')}
           onBlur={(e) => {
             if (advancedAddCheckpointForm.values['model_name'] === '') {
-              const modelName = e.currentTarget.value
-                .match(/[^\\/]+$/)?.[0]
-                ?.split('.')[0];
-
+              const modelName = getModelName(e.currentTarget.value);
               if (modelName) {
                 advancedAddCheckpointForm.setFieldValue(
                   'model_name',
diff --git a/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddDiffusers.tsx b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddDiffusers.tsx
index 469c0c7061..181a6f4234 100644
--- a/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddDiffusers.tsx
+++ b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/AdvancedAddDiffusers.tsx
@@ -11,6 +11,7 @@ import { DiffusersModelConfig } from 'services/api/types';
 import { setAdvancedAddScanModel } from '../../store/modelManagerSlice';
 import BaseModelSelect from '../shared/BaseModelSelect';
 import ModelVariantSelect from '../shared/ModelVariantSelect';
+import { getModelName } from './util';
 
 type AdvancedAddDiffusersProps = {
   model_path?: string;
@@ -25,7 +26,7 @@ export default function AdvancedAddDiffusers(props: AdvancedAddDiffusersProps) {
 
   const advancedAddDiffusersForm = useForm<DiffusersModelConfig>({
     initialValues: {
-      model_name: model_path?.match(/[^\\/]+$/)?.[0] ?? '',
+      model_name: model_path ? getModelName(model_path, false) : '',
       base_model: 'sd-1',
       model_type: 'main',
       path: model_path ? model_path : '',
@@ -94,7 +95,7 @@ export default function AdvancedAddDiffusers(props: AdvancedAddDiffusersProps) {
           {...advancedAddDiffusersForm.getInputProps('path')}
           onBlur={(e) => {
             if (advancedAddDiffusersForm.values['model_name'] === '') {
-              const modelName = e.currentTarget.value.match(/[^\\/]+$/)?.[0];
+              const modelName = getModelName(e.currentTarget.value, false);
               if (modelName) {
                 advancedAddDiffusersForm.setFieldValue(
                   'model_name',
diff --git a/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/util.ts b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/util.ts
new file mode 100644
index 0000000000..7314a86908
--- /dev/null
+++ b/invokeai/frontend/web/src/features/ui/components/tabs/ModelManager/subpanels/AddModelsPanel/util.ts
@@ -0,0 +1,15 @@
+export function getModelName(filepath: string, isCheckpoint: boolean = true) {
+  let regex;
+  if (isCheckpoint) {
+    regex = new RegExp('[^\\\\/]+(?=\\.)');
+  } else {
+    regex = new RegExp('[^\\\\/]+(?=[\\\\/]?$)');
+  }
+
+  const match = filepath.match(regex);
+  if (match) {
+    return match[0];
+  } else {
+    return '';
+  }
+}