diff --git a/2-loop/Makefile b/2-loop/Makefile
index 40a1115..58729fa 100644
--- a/2-loop/Makefile
+++ b/2-loop/Makefile
@@ -8,7 +8,7 @@ loop.elf: loop.ld loop.o
 	arm-none-eabi-ld -T loop.ld -o loop.elf loop.o
 
 loop.o: loop.s
-	arm-none-eabi-as -o loop.o loop.s
+	arm-none-eabi-as -mcpu=cortex-m3 -mthumb -mthumb-interwork -o loop.o loop.s
 
 clean:
 	rm -f loop.o loop.elf loop.bin
diff --git a/2-loop/loop.ld b/2-loop/loop.ld
index 4771d38..a32ef06 100644
--- a/2-loop/loop.ld
+++ b/2-loop/loop.ld
@@ -3,6 +3,6 @@ SECTIONS {
         LONG(0x20000000 + 20K);
         LONG(reset_exception_handler | 1);
         . = 0x130;
-        loop.o(code)
+        loop.o(.text)
     }
 }
diff --git a/2-loop/loop.s b/2-loop/loop.s
index ad5767e..8bde65f 100644
--- a/2-loop/loop.s
+++ b/2-loop/loop.s
@@ -2,10 +2,12 @@
 .syntax unified
 .thumb
 
+
 .global reset_exception_handler
 
-.section code
+.text
 
+.thumb_func
 reset_exception_handler:
 add r0, r0, 1
 bl reset_exception_handler