diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index f0ec97a34de8fb8b667a1d0987a7121e1a675f16..221a797fc71f8848736e135206b4e7511d00492f 100755
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -573,7 +573,7 @@ LLMeshRepoThread::LLMeshRepoThread()
 	mHttpLargeOptions = new LLCore::HttpOptions;
 	mHttpLargeOptions->setTransferTimeout(LARGE_MESH_XFER_TIMEOUT);
 	mHttpHeaders = new LLCore::HttpHeaders;
-	mHttpHeaders->mHeaders.push_back("Accept: application/vnd.ll.mesh");
+	mHttpHeaders->append("Accept", "application/vnd.ll.mesh");
 	mHttpPolicyClass = LLAppViewer::instance()->getAppCoreHttp().getPolicy(LLAppCoreHttp::AP_MESH);
 	mHttpPolicyClass = LLAppViewer::instance()->getAppCoreHttp().getPolicy(LLAppCoreHttp::AP_LARGE_MESH);
 }
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index a8c8445ee10e13b5d2fd93daa9a21c71fb16cf0e..bf9d803098f08b58ace07cccdd446f5e827fed32 100755
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -2410,9 +2410,9 @@ LLTextureFetch::LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* image
 	mHttpOptionsWithHeaders = new LLCore::HttpOptions;
 	mHttpOptionsWithHeaders->setWantHeaders(true);
 	mHttpHeaders = new LLCore::HttpHeaders;
-	mHttpHeaders->append(HTTP_OUT_HEADER_ACCEPT, HTTP_CONTENT_IMAGE_X_J2C);
+	mHttpHeaders->append("Accept", "image/x-j2c");
 	mHttpMetricsHeaders = new LLCore::HttpHeaders;
-	mHttpMetricsHeaders->append(HTTP_OUT_HEADER_CONTENT_TYPE, HTTP_CONTENT_LLSD_XML);
+	mHttpMetricsHeaders->append("Content-Type", "application/llsd+xml");
 	mHttpPolicyClass = LLAppViewer::instance()->getAppCoreHttp().getPolicy(LLAppCoreHttp::AP_TEXTURE);
 }
 
@@ -4050,7 +4050,7 @@ void LLTextureFetchDebugger::init()
 	if (! mHttpHeaders)
 	{
 		mHttpHeaders = new LLCore::HttpHeaders;
-		mHttpHeaders->append(HTTP_OUT_HEADER_ACCEPT, HTTP_CONTENT_IMAGE_X_J2C);
+		mHttpHeaders->append("Accept", "image/x-j2c");
 	}
 }