diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
index a5f06ac97113d0aa4b8338f06ac3d6c5d5f5b411..10f8ac186855300af1fba9b374ddc581717b2356 100644
--- a/arch/microblaze/include/asm/unistd.h
+++ b/arch/microblaze/include/asm/unistd.h
@@ -37,9 +37,7 @@
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 #define __ARCH_WANT_SYS_CLONE
 #define __ARCH_WANT_SYS_VFORK
-#ifdef CONFIG_MMU
 #define __ARCH_WANT_SYS_FORK
-#endif
 
 /*
  * "Conditional" syscalls