diff --git a/src/lib/__tests__/util-test.js b/src/lib/__tests__/util-test.js
index 3a5fe7f28..43a534ba7 100644
--- a/src/lib/__tests__/util-test.js
+++ b/src/lib/__tests__/util-test.js
@@ -511,8 +511,12 @@ describe('lib/util', () => {
     });
 
     describe('requires360Viewer()', () => {
-        it('should return true for file name with 360 before extension', () => {
-            expect(util.requires360Viewer({ name: '360.foo' })).to.be.true;
+        it('should return true for file name with .360 before extension', () => {
+            expect(util.requires360Viewer({ name: 'name.360.foo' })).to.be.true;
+        });
+
+        it('should return false for file name ending with 360 (e.g. IMG_0360.jpg)', () => {
+            expect(util.requires360Viewer({ name: 'IMG_0360.foo' })).to.be.false;
         });
 
         it('should return false for file name with no 360 before extension', () => {
@@ -557,14 +561,4 @@ describe('lib/util', () => {
             expect(element.style.height).to.equal(`${height}px`);
         });
     });
-
-    describe('requires360Viewer()', () => {
-        it('should return true for file name with 360 before extension', () => {
-            expect(util.requires360Viewer({ name: '360.foo' })).to.be.true;
-        });
-
-        it('should return false for file name with no 360 before extension', () => {
-            expect(util.requires360Viewer({ name: 'foo' })).to.be.false;
-        });
-    });
 });
diff --git a/src/lib/util.js b/src/lib/util.js
index d04e2ee98..74a37824c 100644
--- a/src/lib/util.js
+++ b/src/lib/util.js
@@ -616,7 +616,7 @@ export function requires360Viewer(file) {
     // For now, we'll only support this preview if the filename has a secondary
     // extension of '360' (e.g. file.360.mp4)
     const basename = file.name.slice(0, file.name.lastIndexOf('.'));
-    return basename.endsWith('360');
+    return basename.endsWith('.360');
 }
 
 /**