diff --git a/js/src/jit-test/tests/debug/Environment-getVariable-13.js b/js/src/jit-test/tests/debug/Environment-getVariable-13.js
index 43e69ea8e0d5..37d5e90afc82 100644
--- a/js/src/jit-test/tests/debug/Environment-getVariable-13.js
+++ b/js/src/jit-test/tests/debug/Environment-getVariable-13.js
@@ -5,6 +5,9 @@
 
 load(libdir + "jitopts.js");
 
+// GCs can invalidate JIT code and cause this test to fail.
+gczeal(0);
+
 if (!jitTogglesMatch(Opts_Ion2NoOffthreadCompilation))
   quit(0);