diff --git a/asm/nonmatchings/code_1f580_len_1940/SetSelfEnemyFlagBits.s b/asm/nonmatchings/code_1f580_len_1940/SetSelfEnemyFlagBits.s
deleted file mode 100644
index b19ecc2399..0000000000
--- a/asm/nonmatchings/code_1f580_len_1940/SetSelfEnemyFlagBits.s
+++ /dev/null
@@ -1,29 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel SetSelfEnemyFlagBits
-/* 20924 80045524 27BDFFE0 */  addiu     $sp, $sp, -0x20
-/* 20928 80045528 AFBF0018 */  sw        $ra, 0x18($sp)
-/* 2092C 8004552C AFB10014 */  sw        $s1, 0x14($sp)
-/* 20930 80045530 AFB00010 */  sw        $s0, 0x10($sp)
-/* 20934 80045534 8C82000C */  lw        $v0, 0xc($a0)
-/* 20938 80045538 8C900148 */  lw        $s0, 0x148($a0)
-/* 2093C 8004553C 8C450004 */  lw        $a1, 4($v0)
-/* 20940 80045540 0C0B1EAF */  jal       get_variable
-/* 20944 80045544 8C510000 */   lw       $s1, ($v0)
-/* 20948 80045548 10400004 */  beqz      $v0, .L8004555C
-/* 2094C 8004554C 00111827 */   nor      $v1, $zero, $s1
-/* 20950 80045550 8E020000 */  lw        $v0, ($s0)
-/* 20954 80045554 08011559 */  j         .L80045564
-/* 20958 80045558 00511025 */   or       $v0, $v0, $s1
-.L8004555C:
-/* 2095C 8004555C 8E020000 */  lw        $v0, ($s0)
-/* 20960 80045560 00431024 */  and       $v0, $v0, $v1
-.L80045564:
-/* 20964 80045564 AE020000 */  sw        $v0, ($s0)
-/* 20968 80045568 8FBF0018 */  lw        $ra, 0x18($sp)
-/* 2096C 8004556C 8FB10014 */  lw        $s1, 0x14($sp)
-/* 20970 80045570 8FB00010 */  lw        $s0, 0x10($sp)
-/* 20974 80045574 24020002 */  addiu     $v0, $zero, 2
-/* 20978 80045578 03E00008 */  jr        $ra
-/* 2097C 8004557C 27BD0020 */   addiu    $sp, $sp, 0x20
diff --git a/src/code_1f580_len_1940.c b/src/code_1f580_len_1940.c
index e986600e6c..312904464f 100644
--- a/src/code_1f580_len_1940.c
+++ b/src/code_1f580_len_1940.c
@@ -112,7 +112,18 @@ ApiStatus SetSelfEnemyFlags(ScriptInstance* script, s32 isInitialCall) {
     return ApiStatus_DONE2;
 }
 
-INCLUDE_ASM(s32, "code_1f580_len_1940", SetSelfEnemyFlagBits, ScriptInstance* script, s32 isInitialCall);
+ApiStatus SetSelfEnemyFlagBits(ScriptInstance* script, s32 isInitialCall) {
+    Bytecode* thisPos = script->ptrReadPos;
+    Enemy* owner = script->ownerActorID;
+    s32 bits = thisPos[0];
+
+    if (get_variable(script, thisPos[1])) {
+        owner->flags |= bits;
+    } else {
+        owner->flags &= ~bits;
+    }
+    return ApiStatus_DONE2;
+}
 
 INCLUDE_ASM(s32, "code_1f580_len_1940", func_80045580);