diff --git a/sys/conf/options.i386 b/sys/conf/options.i386
index deb17f742af..15e485cc24d 100644
--- a/sys/conf/options.i386
+++ b/sys/conf/options.i386
@@ -53,6 +53,7 @@ CPU_ELAN_XTAL			opt_cpu.h
 CPU_ELAN_PPS			opt_cpu.h
 CPU_ENABLE_SSE			opt_cpu.h
 CPU_ENABLE_TCC			opt_cpu.h
+CPU_ENABLE_LONGRUN		opt_cpu.h
 CPU_FASTER_5X86_FPU		opt_cpu.h
 CPU_GEODE			opt_cpu.h
 CPU_I486_ON_386			opt_cpu.h