diff --git a/snowblocks/firefox/user.js b/snowblocks/firefox/user.js
index 0b14e5e..ec3d433 100644
--- a/snowblocks/firefox/user.js
+++ b/snowblocks/firefox/user.js
@@ -200,6 +200,9 @@ user_pref("browser.startup.homepage", "about:home");
  */
 user_pref("browser.startup.page", 3);
 
+/* Disable automatic sending of reports on crash. */
+user_pref("browser.tabs.crashReporting.sendReport", false);
+
 /* Render tabs in the title bar. */
 user_pref("browser.tabs.drawInTitlebar", true);