diff --git a/pilgen/src/lib.rs b/pilgen/src/lib.rs
index 6c4fa77eb..fe059c3b6 100644
--- a/pilgen/src/lib.rs
+++ b/pilgen/src/lib.rs
@@ -961,7 +961,7 @@ pol constant p_instr_dec_CNT = [0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0] + [0]*;
 pol constant p_instr_jmp = [0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] + [1]*;
 pol constant p_instr_jmp_param_l = [0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 9] + [9]*;
 pol constant p_instr_jmpz = [0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0] + [0]*;
-pol constant p_instr_jmpz_param_l = [0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0] + [0]*;
+pol constant p_instr_jmpz_param_l = [0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0] + [0]*;
 pol constant p_read_X_A = [0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0] + [0]*;
 pol constant p_read_X_CNT = [0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0] + [0]*;
 pol constant p_read_X_pc = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + [0]*;
diff --git a/test_data/asm/simple_sum.asm b/test_data/asm/simple_sum.asm
index f74bdf525..1f5a791c1 100644
--- a/test_data/asm/simple_sum.asm
+++ b/test_data/asm/simple_sum.asm
@@ -33,7 +33,7 @@ instr assert_zero X { XIsZero = 1 }
 CNT <=X= ${ ("input", 1) };
 
 start::
- jmpz CNT, end;
+ jmpz CNT, check;
  A <=X= A + ${ ("input", CNT + 1) };
  // Could use "CNT <=X= CNT - 1", but that would need X.
  dec_CNT;