diff --git a/3rdp/build/GNUmakefile b/3rdp/build/GNUmakefile
index d9b74f893773b731fdc5081836307c83693788f7..36d62f8ff10c60912c6dd778ed46b11f04d03e16 100644
--- a/3rdp/build/GNUmakefile
+++ b/3rdp/build/GNUmakefile
@@ -36,7 +36,7 @@ ifneq ($(os),darwin)
  endif
 endif
 # Blacklist some machines...
-ifeq ($(machine),armv7l)
+ifeq ($(machine_uname),armv7l)
  JS_CONFIGURE_ARGS += '--disable-tracejit'
 endif