diff --git a/projects/mips_sys/src/mips_sys.vhd b/projects/mips_sys/src/mips_sys.vhd
index 76893e1..4e9c360 100644
--- a/projects/mips_sys/src/mips_sys.vhd
+++ b/projects/mips_sys/src/mips_sys.vhd
@@ -488,9 +488,9 @@ mem_mux:
 	process(ADDR_O)
 	begin
 		mem_area	<= mem_dead;
---		if ADDR_O(31 downto 28) = X"0" then
---			mem_area	<= mem_flash;
-		if ADDR_O(31 downto 28) = X"A" then
+		if ADDR_O(31 downto 28) = X"0" then
+			mem_area	<= mem_flash;
+		elsif ADDR_O(31 downto 28) = X"A" then
 			if ADDR_O(27 downto 26) = "00" then
 				if ADDR_O(18 downto 16) = "000" then
 					mem_area	<= mem_gpio;