diff --git a/lib/mock-component/mock-component.ts b/lib/mock-component/mock-component.ts
index 31ab54e5a5..f65f4a54a0 100644
--- a/lib/mock-component/mock-component.ts
+++ b/lib/mock-component/mock-component.ts
@@ -28,7 +28,7 @@ class ComponentMockBase extends MockControlValueAccessor implements AfterContent
   }
 
   public ngAfterContentInit(): void {
-    const config: any = this.__ngMocksConfig?.config;
+    const config = (this.__ngMocksConfig as any).config;
     if (!(this as any).__rendered && config && config.render) {
       for (const block of Object.keys(config.render)) {
         const { $implicit, variables } =
@@ -45,11 +45,11 @@ class ComponentMockBase extends MockControlValueAccessor implements AfterContent
   }
 
   private __ngMocksInstall(changeDetector: ChangeDetectorRef): void {
-    const refs: any = this.__ngMocksConfig?.viewChildRefs;
+    const refs = (this.__ngMocksConfig as any).viewChildRefs;
 
     // Providing method to hide any @ContentChild based on its selector.
     (this as any).__hide = (contentChildSelector: string) => {
-      const key = refs?.get(contentChildSelector);
+      const key = refs.get(contentChildSelector);
       if (key) {
         (this as any)[`mockRender_${contentChildSelector}`] = false;
         changeDetector.detectChanges();
@@ -58,7 +58,7 @@ class ComponentMockBase extends MockControlValueAccessor implements AfterContent
 
     // Providing a method to render any @ContentChild based on its selector.
     (this as any).__render = (contentChildSelector: string, $implicit?: any, variables?: Record<keyof any, any>) => {
-      const key = refs?.get(contentChildSelector);
+      const key = refs.get(contentChildSelector);
       let templateRef: TemplateRef<any>;
       let viewContainer: ViewContainerRef;
       if (key) {
diff --git a/lib/mock-directive/mock-directive.ts b/lib/mock-directive/mock-directive.ts
index 6ec0daec98..3c81a0eb6f 100644
--- a/lib/mock-directive/mock-directive.ts
+++ b/lib/mock-directive/mock-directive.ts
@@ -24,7 +24,7 @@ class DirectiveMockBase extends MockControlValueAccessor implements OnInit {
   }
 
   public ngOnInit(): void {
-    const config: any = this.__ngMocksConfig?.config;
+    const config = (this.__ngMocksConfig as any).config;
     if (config?.render) {
       const { $implicit, variables } =
         config.render !== true
diff --git a/lib/mock-helper/mock-helper.attributes.ts b/lib/mock-helper/mock-helper.attributes.ts
index be4a3fa211..0e0d33a293 100644
--- a/lib/mock-helper/mock-helper.attributes.ts
+++ b/lib/mock-helper/mock-helper.attributes.ts
@@ -22,7 +22,7 @@ export default (label: string, attr: 'inputs' | 'outputs', ...args: any[]) => {
     }
 
     /* istanbul ignore if */
-    for (const attrDef of meta[attr] || []) {
+    for (const attrDef of meta[attr] || /* istanbul ignore next */ []) {
       const [prop, alias = ''] = attrDef.split(':', 2).map(v => v.trim());
       if (!alias && prop !== sel) {
         continue;
diff --git a/lib/mock/clone-providers.ts b/lib/mock/clone-providers.ts
index f115bfd740..32dd31cf63 100644
--- a/lib/mock/clone-providers.ts
+++ b/lib/mock/clone-providers.ts
@@ -12,7 +12,7 @@ export default (mockType: AnyType<any>, providers?: any[]): { providers: Provide
   let setNgValueAccessor: boolean | undefined;
   const resolutions = new Map();
 
-  for (const providerDef of flatten(providers || [])) {
+  for (const providerDef of flatten(providers || /* istanbul ignore next */ [])) {
     const provide =
       providerDef && typeof providerDef === 'object' && providerDef.provide ? providerDef.provide : providerDef;
     if (provide === NG_VALIDATORS) {