diff --git a/aio/tools/ng-packages-installer/index.js b/aio/tools/ng-packages-installer/index.js
index 23af920e66..3dd30a516c 100644
--- a/aio/tools/ng-packages-installer/index.js
+++ b/aio/tools/ng-packages-installer/index.js
@@ -62,7 +62,7 @@ class NgPackagesInstaller {
    * contents and acts as an indicator that dependencies have been overridden.
    */
   installLocalDependencies() {
-    if (this._checkLocalMarker() !== true || this.force) {
+    if (this.force || !this._checkLocalMarker()) {
       const pathToPackageConfig = path.resolve(this.projectDir, PACKAGE_JSON);
       const packages = this._getDistPackages();
 
diff --git a/aio/tools/ng-packages-installer/index.spec.js b/aio/tools/ng-packages-installer/index.spec.js
index e8950045ab..b532a05e20 100644
--- a/aio/tools/ng-packages-installer/index.spec.js
+++ b/aio/tools/ng-packages-installer/index.spec.js
@@ -52,6 +52,8 @@ describe('NgPackagesInstaller', () => {
 
     beforeEach(() => {
       spyOn(installer, '_checkLocalMarker');
+      spyOn(installer, '_installDeps');
+      spyOn(installer, '_setLocalMarker');
 
       // These are the packages that are "found" in the dist directory
       dummyNgPackages = {
@@ -121,12 +123,20 @@ describe('NgPackagesInstaller', () => {
     });
 
     describe('when there is a local package marker', () => {
+      beforeEach(() => installer._checkLocalMarker.and.returnValue(true));
+
       it('should not continue processing', () => {
-        installer._checkLocalMarker.and.returnValue(true);
         installer.installLocalDependencies();
         expect(installer._checkLocalMarker).toHaveBeenCalled();
         expect(installer._getDistPackages).not.toHaveBeenCalled();
       });
+
+      it('should continue processing (without checking for local marker) if `force` is true', () => {
+        installer.force = true;
+        installer.installLocalDependencies();
+        expect(installer._checkLocalMarker).not.toHaveBeenCalled();
+        expect(installer._getDistPackages).toHaveBeenCalled();
+      });
     });
 
     describe('when there is no local package marker', () => {
@@ -135,8 +145,7 @@ describe('NgPackagesInstaller', () => {
       beforeEach(() => {
         log = [];
         fs.writeFileSync.and.callFake((filePath, contents) => filePath === packageJsonPath && log.push(`writeFile: ${contents}`));
-        spyOn(installer, '_installDeps').and.callFake(() => log.push('installDeps:'));
-        spyOn(installer, '_setLocalMarker');
+        installer._installDeps.and.callFake(() => log.push('installDeps:'));
         installer._checkLocalMarker.and.returnValue(false);
         installer.installLocalDependencies();
       });