diff --git a/asm/non_matchings/code/z_collision_check/func_8005B860.s b/asm/non_matchings/code/z_collision_check/func_8005B860.s
deleted file mode 100644
index 0604780831..0000000000
--- a/asm/non_matchings/code/z_collision_check/func_8005B860.s
+++ /dev/null
@@ -1,11 +0,0 @@
-glabel func_8005B860
-/* AD2A00 8005B860 AFA40000 */  sw    $a0, ($sp)
-/* AD2A04 8005B864 8CCE0000 */  lw    $t6, ($a2)
-/* AD2A08 8005B868 24020001 */  li    $v0, 1
-/* AD2A0C 8005B86C ACAE0000 */  sw    $t6, ($a1)
-/* AD2A10 8005B870 90CF0004 */  lbu   $t7, 4($a2)
-/* AD2A14 8005B874 A0AF0004 */  sb    $t7, 4($a1)
-/* AD2A18 8005B878 90D80005 */  lbu   $t8, 5($a2)
-/* AD2A1C 8005B87C 03E00008 */  jr    $ra
-/* AD2A20 8005B880 A0B80005 */   sb    $t8, 5($a1)
-
diff --git a/include/z64actor.h b/include/z64actor.h
index 001a25923e..e948ad6af3 100644
--- a/include/z64actor.h
+++ b/include/z64actor.h
@@ -237,6 +237,13 @@ typedef struct
     /* 0x0A */ s16 unk_0A;
 } ColliderBump; // size = 0x0C
 
+typedef struct
+{
+    /* 0x00 */ s32 flags; /* Collision Exclusion Mask */
+    /* 0x04 */ u8 effect; /* Damage Effect (Knockback, Fire, etc.) */
+    /* 0x05 */ u8 unk_05;
+} ColliderBumpInit; // size = 0x0C
+
 typedef struct ColliderBody
 {
     /* 0x00 */ ColliderTouch toucher;
@@ -302,7 +309,7 @@ typedef struct
 typedef struct
 {
     /* 0x00 */ ColliderBodyInfo body;
-    /* 0x06 */ ColliderBodyInfoInner inner;
+    /* 0x08 */ ColliderBodyInfoInner inner;
     /* 0x20 */ ColliderDimensions dim;
 } ColliderCylinderInit; // size = 0x2C
 
diff --git a/src/code/z_collision_check.c b/src/code/z_collision_check.c
index 5d8655470d..a57b9eb8ac 100644
--- a/src/code/z_collision_check.c
+++ b/src/code/z_collision_check.c
@@ -84,7 +84,7 @@ s32 func_8005B7E4(GlobalContext* globalCtx, ColliderTouch* touch)
     return 1;
 }
 
-//copy
+//copy. copyFrom might actually be a different type
 s32 func_8005B7F4(GlobalContext* globalCtx, ColliderTouch* copyTo, ColliderTouch* copyFrom)
 {
     copyTo->flags = copyFrom->flags;
@@ -113,7 +113,14 @@ s32 func_8005B850(GlobalContext* globalCtx, ColliderBump* bump)
     return 1;
 }
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_collision_check/func_8005B860.s")
+//init from overlay
+s32 func_8005B860(GlobalContext* globalCtx, ColliderBump* bump, ColliderBumpInit* init)
+{
+    bump->flags = init->flags;
+    bump->effect = init->effect;
+    bump->unk_05 = init->unk_05;
+    return 1;
+}
 
 #pragma GLOBAL_ASM("asm/non_matchings/code/z_collision_check/func_8005B884.s")