diff --git a/src/plugins/network/RequestDetails.js b/src/plugins/network/RequestDetails.js
index 736b71d92..b952ebb7d 100644
--- a/src/plugins/network/RequestDetails.js
+++ b/src/plugins/network/RequestDetails.js
@@ -56,11 +56,8 @@ function decodeBody(container: Request | Response): string {
     return '';
   }
   const b64Decoded = atob(container.data);
-  const encodingHeader = container.headers.find(
-    header => header.key === 'Content-Encoding',
-  );
 
-  return encodingHeader && encodingHeader.value === 'gzip'
+  return getHeaderValue(container.headers, 'Content-Encoding') === 'gzip'
     ? decompress(b64Decoded)
     : b64Decoded;
 }
diff --git a/src/plugins/network/index.js b/src/plugins/network/index.js
index 2a957dd0e..584c41a15 100644
--- a/src/plugins/network/index.js
+++ b/src/plugins/network/index.js
@@ -81,7 +81,7 @@ const COLUMNS = {
   },
 };
 
-export function getHeaderValue(headers: Array<Header>, key: string) {
+export function getHeaderValue(headers: Array<Header>, key: string): string {
   for (const header of headers) {
     if (header.key.toLowerCase() === key.toLowerCase()) {
       return header.value;