diff --git a/src/misc/50count.asm b/src/misc/50count.asm
index 7cdefac..356884f 100644
--- a/src/misc/50count.asm
+++ b/src/misc/50count.asm
@@ -9,22 +9,23 @@ prog:
     imm6 0x1
     load r0, r2         ; value to increment by
 
-    ; r1+r2=(r3 & r4)
+    ; r1+r2=r3
     add                 ; add r1 + value
-    load r3, r4         ; over-write upper MSB to store a copy
     load r3, r2         ; store result in r2
 
     imm6 0x32
     load r0, r1         
     sub                 ; 50 - r2 = remainder
 
+    ; r3 (C) holds the difference between 50 and our result
+
     imm6 prog.result
     beqz                ; if r3 == 0 branch to [r0]
 
-    load r4, r1         
+    load r2, r1         
     imm6 prog.loop
     ba                  ; else, copy result to r1 and loop
 
 .result:
-    out r4
+    out r2
     halt
\ No newline at end of file