diff --git a/js/src/devtools/automation/variants/arm-sim b/js/src/devtools/automation/variants/arm-sim
index f2dbbaff736c..64d895094355 100644
--- a/js/src/devtools/automation/variants/arm-sim
+++ b/js/src/devtools/automation/variants/arm-sim
@@ -5,3 +5,4 @@
 --enable-threadsafe
 --enable-arm-simulator
 --target=i686-pc-linux
+--host=i686-pc-linux