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-rw-r--r--src/library_sockfs.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/library_sockfs.js b/src/library_sockfs.js
index c79661d8..78fc382f 100644
--- a/src/library_sockfs.js
+++ b/src/library_sockfs.js
@@ -140,7 +140,7 @@ mergeInto(LibraryManager.library, {
// the node ws library API is slightly different than the browser's
var opts = ENVIRONMENT_IS_NODE ? {headers: {'websocket-protocol': ['binary']}} : ['binary'];
// If node we use the ws library.
- var WebSocket = ENVIRONMENT_IS_NODE ? require('ws') : window.WebSocket;
+ var WebSocket = ENVIRONMENT_IS_NODE ? require('ws') : window['WebSocket'];
ws = new WebSocket(url, opts);
ws.binaryType = 'arraybuffer';
} catch (e) {