diff --git a/packages/isomorphic-unfetch/index.d.ts b/packages/isomorphic-unfetch/index.d.ts
index 0c53ad9..4a2ecdd 100644
--- a/packages/isomorphic-unfetch/index.d.ts
+++ b/packages/isomorphic-unfetch/index.d.ts
@@ -14,4 +14,4 @@ declare namespace unfetch {
 
 declare const unfetch: typeof fetch;
 
-export default unfetch;
+export = unfetch;
diff --git a/src/index.d.ts b/src/index.d.ts
index 0c53ad9..4a2ecdd 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -14,4 +14,4 @@ declare namespace unfetch {
 
 declare const unfetch: typeof fetch;
 
-export default unfetch;
+export = unfetch;