diff --git a/plugins/caches.js b/plugins/caches.js
index f69949d..bfcc1ba 100644
--- a/plugins/caches.js
+++ b/plugins/caches.js
@@ -100,8 +100,8 @@ exports.plugin = {
                     response = h.response(Buffer.from(value.c.data));
                     response.headers = value.h;
                 } else {
-                    response = h.response(value);
-                    response.headers['content-type'] = 'application/zip';
+                    response = h.response(Buffer.from(value));
+                    response.headers['content-type'] = 'text/plain';
                 }
 
                 if (strategyConfig.plugin !== 's3') {
@@ -210,10 +210,10 @@ exports.plugin = {
                     }
                 });
 
-                // For application/zip, upload it as Buffer
+                // For text/plain, upload it as Buffer
                 // Otherwise, catbox-s3 will try to JSON.stringify (https://github.com/fhemberger/catbox-s3/blob/master/lib/index.js#L236)
                 // and might create issue on large payload
-                if (contents.h['content-type'] === 'application/zip') {
+                if (contents.h['content-type'] === 'text/plain') {
                     value = contents.c;
                 }
 
diff --git a/test/plugins/caches.test.js b/test/plugins/caches.test.js
index 10e671e..9dfe13f 100644
--- a/test/plugins/caches.test.js
+++ b/test/plugins/caches.test.js
@@ -263,7 +263,7 @@ describe('events plugin test', () => {
                 payload: 'THIS IS A TEST',
                 headers: {
                     'x-foo': 'bar',
-                    'content-type': 'application/zip',
+                    'content-type': 'text/plain',
                     ignore: 'true'
                 },
                 credentials: {
@@ -321,7 +321,7 @@ describe('events plugin test', () => {
             });
         });
 
-        it('saves a cache without headers for application/zip type', async () => {
+        it('saves a cache without headers for text/plain type', async () => {
             options.url = `/caches/events/${mockEventID}/foo`;
 
             const putResponse = await server.inject(options);
@@ -336,7 +336,7 @@ describe('events plugin test', () => {
                 }
             }).then((getResponse) => {
                 assert.equal(getResponse.statusCode, 200);
-                assert.equal(getResponse.headers['content-type'], 'application/zip');
+                assert.equal(getResponse.headers['content-type'], 'text/plain; charset=utf-8');
                 assert.isNotOk(getResponse.headers['x-foo']);
                 assert.isNotOk(getResponse.headers.ignore);
                 assert.equal(getResponse.result, 'THIS IS A TEST');
@@ -373,7 +373,7 @@ describe('events plugin test', () => {
                 payload: 'THIS IS A TEST',
                 headers: {
                     'x-foo': 'bar',
-                    'content-type': 'application/zip',
+                    'content-type': 'text/plain',
                     ignore: 'true'
                 },
                 credentials: {
@@ -431,7 +431,7 @@ describe('events plugin test', () => {
             });
         });
 
-        it('saves a cache without headers for application/zip type', async () => {
+        it('saves a cache without headers for text/plain type', async () => {
             options.url = `/caches/jobs/${mockJobID}/foo`;
 
             const putResponse = await server.inject(options);
@@ -446,7 +446,7 @@ describe('events plugin test', () => {
                 }
             }).then((getResponse) => {
                 assert.equal(getResponse.statusCode, 200);
-                assert.equal(getResponse.headers['content-type'], 'application/zip');
+                assert.equal(getResponse.headers['content-type'], 'text/plain; charset=utf-8');
                 assert.isNotOk(getResponse.headers['x-foo']);
                 assert.isNotOk(getResponse.headers.ignore);
                 assert.equal(getResponse.result, 'THIS IS A TEST');