diff --git a/tests/lib/philomena/tag-utils.spec.ts b/tests/lib/philomena/tag-utils.spec.ts
index c95d56e..6ae1198 100644
--- a/tests/lib/philomena/tag-utils.spec.ts
+++ b/tests/lib/philomena/tag-utils.spec.ts
@@ -11,7 +11,6 @@ describe('tag-utils', () => {
     }
 
     describe('Parsing from /search/?q=tag links', () => {
-      // Test cases for tags separated by commas
       it('should resolve a single tag from /search URLs', () => {
         expect(resolveFromSearchQuery('safe')).toBe('safe');
       });
@@ -21,6 +20,11 @@ describe('tag-utils', () => {
         expect(resolveFromSearchQuery('safe, suggestive')).toBe(null);
       });
 
+      it('should return null if query is empty or not a term', () => {
+        expect(resolveFromSearchQuery('')).toBe(null);
+        expect(resolveFromSearchQuery('!')).toBe(null);
+      });
+
       it('should properly treat parentheses in the query with single tag', () => {
         // Parentheses are operators in the query language, but when inside the tag name, they should still be properly
         // working.