diff --git a/src/material-experimental/mdc-snack-bar/snack-bar.spec.ts b/src/material-experimental/mdc-snack-bar/snack-bar.spec.ts
index 710913e3fbc1..b8fedddde6c7 100644
--- a/src/material-experimental/mdc-snack-bar/snack-bar.spec.ts
+++ b/src/material-experimental/mdc-snack-bar/snack-bar.spec.ts
@@ -691,7 +691,7 @@ describe('MatSnackBar with parent MatSnackBar', () => {
   beforeEach(fakeAsync(() => {
     TestBed.configureTestingModule({
       imports: [MatSnackBarModule, CommonModule, NoopAnimationsModule],
-      declarations: [ComponentThatProvidesMatSnackBar],
+      declarations: [ComponentThatProvidesMatSnackBar, DirectiveWithViewContainer],
     }).compileComponents();
   }));
 
@@ -765,7 +765,7 @@ describe('MatSnackBar Positioning', () => {
   beforeEach(fakeAsync(() => {
     TestBed.configureTestingModule({
       imports: [MatSnackBarModule, CommonModule, NoopAnimationsModule],
-      declarations: [ComponentWithChildViewContainer],
+      declarations: [ComponentWithChildViewContainer, DirectiveWithViewContainer],
     }).compileComponents();
   }));
 
diff --git a/src/material/snack-bar/snack-bar.spec.ts b/src/material/snack-bar/snack-bar.spec.ts
index f7c67d2276bc..d1dc01f64606 100644
--- a/src/material/snack-bar/snack-bar.spec.ts
+++ b/src/material/snack-bar/snack-bar.spec.ts
@@ -751,7 +751,7 @@ describe('MatSnackBar with parent MatSnackBar', () => {
   beforeEach(fakeAsync(() => {
     TestBed.configureTestingModule({
       imports: [MatSnackBarModule, CommonModule, NoopAnimationsModule],
-      declarations: [ComponentThatProvidesMatSnackBar],
+      declarations: [ComponentThatProvidesMatSnackBar, DirectiveWithViewContainer],
     }).compileComponents();
   }));
 
@@ -825,7 +825,7 @@ describe('MatSnackBar Positioning', () => {
   beforeEach(fakeAsync(() => {
     TestBed.configureTestingModule({
       imports: [MatSnackBarModule, CommonModule, NoopAnimationsModule],
-      declarations: [ComponentWithChildViewContainer],
+      declarations: [ComponentWithChildViewContainer, DirectiveWithViewContainer],
     }).compileComponents();
   }));