diff --git a/boot/boot_code_asic.objdump b/boot/boot_code_asic.objdump
index 1d5d8313..7e1c1bf4 100644
--- a/boot/boot_code_asic.objdump
+++ b/boot/boot_code_asic.objdump
@@ -1617,8 +1617,8 @@ default_handler:
 1a00103a:	0291                	addi	t0,t0,4
 	bltu t0, t1, 1b
 1a00103c:	fe62ede3          	bltu	t0,t1,1a001036 <_start+0x20>
-	lw a0, 0(sp)                    /* a0 = argc */
-1a001040:	4502                	lw	a0,0(sp)
+	li a0, 0                        /* a0 = argc */
+1a001040:	4501                	li	a0,0
 	addi a1, sp, __SIZEOF_POINTER__ /* a1 = argv */
 1a001042:	004c                	addi	a1,sp,4
 	li a2, 0                        /* a2 = envp = NULL */
diff --git a/boot/boot_code_fpga.objdump b/boot/boot_code_fpga.objdump
index 1d5d8313..7e1c1bf4 100644
--- a/boot/boot_code_fpga.objdump
+++ b/boot/boot_code_fpga.objdump
@@ -1617,8 +1617,8 @@ default_handler:
 1a00103a:	0291                	addi	t0,t0,4
 	bltu t0, t1, 1b
 1a00103c:	fe62ede3          	bltu	t0,t1,1a001036 <_start+0x20>
-	lw a0, 0(sp)                    /* a0 = argc */
-1a001040:	4502                	lw	a0,0(sp)
+	li a0, 0                        /* a0 = argc */
+1a001040:	4501                	li	a0,0
 	addi a1, sp, __SIZEOF_POINTER__ /* a1 = argv */
 1a001042:	004c                	addi	a1,sp,4
 	li a2, 0                        /* a2 = envp = NULL */
diff --git a/boot/crt0.S b/boot/crt0.S
index 054f1841..0545b89e 100644
--- a/boot/crt0.S
+++ b/boot/crt0.S
@@ -41,7 +41,7 @@ _start:
 /* TODO: load data from ROM */
 
 /* call main */
-	lw a0, 0(sp)                    /* a0 = argc */
+	li a0, 0                        /* a0 = argc */
 	addi a1, sp, __SIZEOF_POINTER__ /* a1 = argv */
 	li a2, 0                        /* a2 = envp = NULL */
 	call main
diff --git a/sim/boot/boot_code.cde b/sim/boot/boot_code.cde
index 771ea4f0..9d4a5a99 100644
--- a/sim/boot/boot_code.cde
+++ b/sim/boot/boot_code.cde
@@ -1038,7 +1038,7 @@
 10100000001000111101100011100011
 00000010100100010000000000000010
 11111110011000101110110111100011
-00000000010011000100010100000010
+00000000010011000100010100000001
 00100000100001010100011000000001
 11011010010011111111000001101111
 10000101100000101000000100110010