diff --git a/lab1/Makefile b/lab1/Makefile
index f44fc63..72bc400 100644
--- a/lab1/Makefile
+++ b/lab1/Makefile
@@ -3,7 +3,8 @@ CC = arm-none-eabi-gcc
 # The location of the C compiler
 # ARMGCC_ROOT is used by some makefiles that need to know where the compiler
 # is installed.
-ARMGCC_ROOT := ${shell dirname ${shell readlink ${shell which ${CC}}}}/..
+ARMGCC_ROOT := /usr/arm-none-eabi
+# ${shell dirname ${shell readlink ${shell which ${CC}}}}/..
 
 ROOT ?= $(abspath ..)
 
diff --git a/lab1/main.c b/lab1/main.c
index e462159..c4a8100 100644
--- a/lab1/main.c
+++ b/lab1/main.c
@@ -228,11 +228,11 @@ int main(void) {
                 break;
             case SW1 | SW2:
                 outP1(0);
-                outP2(RED);
+                outP2(BLUE | GREEN);
                 break;
             default:
                 outP1(0);
-                outP2(BLUE | GREEN);
+                outP2(0);
         }
     }
 }
\ No newline at end of file