diff --git a/target/nios2/cpu-param.h b/target/nios2/cpu-param.h
index 177d720864..767bba4b7b 100644
--- a/target/nios2/cpu-param.h
+++ b/target/nios2/cpu-param.h
@@ -16,6 +16,5 @@
 #else
 # define TARGET_VIRT_ADDR_SPACE_BITS 32
 #endif
-#define NB_MMU_MODES 2
 
 #endif