diff --git a/arch/nios2/soc/nios2-qemu/include/linker.h b/arch/nios2/soc/nios2-qemu/include/linker.h
index 65be35ba120..8326d683e40 100644
--- a/arch/nios2/soc/nios2-qemu/include/linker.h
+++ b/arch/nios2/soc/nios2-qemu/include/linker.h
@@ -70,7 +70,7 @@
 #define ONCHIP_MEMORY2_0_BEFORE_EXCEPTION_REGION_BASE 0x400000
 #define ONCHIP_MEMORY2_0_BEFORE_EXCEPTION_REGION_SPAN 32
 #define ONCHIP_MEMORY2_0_REGION_BASE 0x400020
-#define ONCHIP_MEMORY2_0_REGION_SPAN 180192
+#define ONCHIP_MEMORY2_0_REGION_SPAN 262112
 #define RESET_REGION_BASE 0x0
 #define RESET_REGION_SPAN 32
 
diff --git a/arch/nios2/soc/nios2-qemu/include/system.h b/arch/nios2/soc/nios2-qemu/include/system.h
index 6e23e255528..2374ffd5745 100644
--- a/arch/nios2/soc/nios2-qemu/include/system.h
+++ b/arch/nios2/soc/nios2-qemu/include/system.h
@@ -247,8 +247,8 @@
 #define ONCHIP_MEMORY2_0_READ_DURING_WRITE_MODE "DONT_CARE"
 #define ONCHIP_MEMORY2_0_SINGLE_CLOCK_OP 0
 #define ONCHIP_MEMORY2_0_SIZE_MULTIPLE 1
-#define ONCHIP_MEMORY2_0_SIZE_VALUE 180224
-#define ONCHIP_MEMORY2_0_SPAN 180224
+#define ONCHIP_MEMORY2_0_SIZE_VALUE 262144
+#define ONCHIP_MEMORY2_0_SPAN 262144
 #define ONCHIP_MEMORY2_0_TYPE "altera_avalon_onchip_memory2"
 #define ONCHIP_MEMORY2_0_WRITABLE 1