diff --git a/src/app/shared/pipes/academic-year-state.pipe.ts b/src/app/shared/pipes/academic-year-state.pipe.ts
index 8fbd1fe9747c66b10e12f3708b335f1ca2ce8725..ae43459468405ab2be6372baba35e4d8d2569ced 100644
--- a/src/app/shared/pipes/academic-year-state.pipe.ts
+++ b/src/app/shared/pipes/academic-year-state.pipe.ts
@@ -6,7 +6,7 @@ import { Pipe, PipeTransform } from '@angular/core';
 })
 
 export class AcademicYearStatePipe implements PipeTransform {
-	terms = [];
+	terms = [] as string[];
 	constructor(private route: ActivatedRoute) {
 		this.terms = route.snapshot.data.requiredData.terms.map(t => t.termCode);
 	}
diff --git a/tsconfig.json b/tsconfig.json
index df4ef3e57e25767eefb69f594d2168ca60b2d52f..ed67d4901ecea3942bb990abd8f8bc2fe37ed1d8 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,7 @@
 {
   "compileOnSave": false,
   "compilerOptions": {
+    "strictNullChecks": true,
     "baseUrl": "./src",
     "importHelpers": true,
     "paths": {