diff --git a/asm/include/main_0205B7C8.inc b/asm/include/main_0205B80C.inc
similarity index 99%
rename from asm/include/main_0205B7C8.inc
rename to asm/include/main_0205B80C.inc
index a29cdb1f..7c859dd9 100644
--- a/asm/include/main_0205B7C8.inc
+++ b/asm/include/main_0205B80C.inc
@@ -388,4 +388,5 @@
 .public sub_0205B44C
 .public sub_0205B560
 .public sub_0205B77C
+.public sub_0205B7C8
 .public vsprintf
diff --git a/asm/main_0205B7C8.s b/asm/main_0205B80C.s
similarity index 99%
rename from asm/main_0205B7C8.s
rename to asm/main_0205B80C.s
index be6f53ad..67cd20cd 100644
--- a/asm/main_0205B7C8.s
+++ b/asm/main_0205B80C.s
@@ -1,30 +1,8 @@
 	.include "asm/macros.inc"
-	.include "main_0205B7C8.inc"
+	.include "main_0205B80C.inc"
 
 	.text
 
-	arm_func_start sub_0205B7C8
-sub_0205B7C8: ; 0x0205B7C8
-	stmdb sp!, {r4, lr}
-	mov r2, #0xb0
-	mul r4, r0, r2
-	ldr r0, _0205B808 ; =_020B0A54
-	mov r1, #0
-	ldr r0, [r0]
-	add r0, r0, r4
-	bl MemsetSimple
-	ldr r0, _0205B808 ; =_020B0A54
-	mov r2, #0
-	ldr r1, [r0]
-	strb r2, [r1, r4]
-	ldr r0, [r0]
-	add r0, r0, r4
-	strh r2, [r0, #0xa2]
-	ldmia sp!, {r4, pc}
-	.align 2, 0
-_0205B808: .word _020B0A54
-	arm_func_end sub_0205B7C8
-
 	arm_func_start sub_0205B80C
 sub_0205B80C: ; 0x0205B80C
 	stmdb sp!, {r4, r5, r6, r7, r8, sb, sl, lr}
diff --git a/include/main_0205B7C8.h b/include/main_0205B7C8.h
new file mode 100644
index 00000000..ee2a396a
--- /dev/null
+++ b/include/main_0205B7C8.h
@@ -0,0 +1,6 @@
+#ifndef PMDSKY_MAIN_0205B7C8_H
+#define PMDSKY_MAIN_0205B7C8_H
+
+void sub_0205B7C8(s32 index);
+
+#endif //PMDSKY_MAIN_0205B7C8_H
diff --git a/main.lsf b/main.lsf
index c5788de4..6d678ae9 100644
--- a/main.lsf
+++ b/main.lsf
@@ -152,7 +152,8 @@ Static main
 	Object src/main_0205B6EC.o
 	Object asm/main_0205B738.o
 	Object src/main_0205B77C.o
-	Object asm/main_0205B7C8.o
+	Object src/main_0205B7C8.o
+	Object asm/main_0205B80C.o
 	Object src/dungeon_init_2.o
 	Object asm/main_0206A750.o
 	Object src/main_0206C98C.o
diff --git a/src/main_0205B7C8.c b/src/main_0205B7C8.c
new file mode 100644
index 00000000..ebb61018
--- /dev/null
+++ b/src/main_0205B7C8.c
@@ -0,0 +1,20 @@
+#include "main_0205B7C8.h"
+#include "main_0200330C.h"
+
+struct unkStruct_020B0A54 {
+    u8 f0;
+    u8 pad[161];
+    u16 fA2;
+    u8 pad2[12];
+};
+
+// Should match the struct in main_0205B77C, but haven't gotten it to match yet.
+// https://decomp.me/scratch/WXX6d
+extern struct unkStruct_020B0A54 *_020B0A54;
+
+void sub_0205B7C8(s32 index)
+{
+    MemsetSimple((u8*) &_020B0A54[index], 0, 0xB0);
+    _020B0A54[index].f0 = 0;
+    _020B0A54[index].fA2 = 0;
+}