diff --git a/toolkit/modules/Troubleshoot.jsm b/toolkit/modules/Troubleshoot.jsm
index 4c6ac558df..a862b1db46 100644
--- a/toolkit/modules/Troubleshoot.jsm
+++ b/toolkit/modules/Troubleshoot.jsm
@@ -460,7 +460,9 @@ var dataProviders = {
 
         // Eagerly free resources.
         let loseExt = gl.getExtension("WEBGL_lose_context");
-        loseExt.loseContext();
+        if (loseExt) {
+          loseExt.loseContext();
+        }
 
 
         return contextInfo;