diff --git a/asm/easy_chat.s b/asm/easy_chat.s
index 5d7a02a84..8455decfe 100644
--- a/asm/easy_chat.s
+++ b/asm/easy_chat.s
@@ -5,21 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_811A4D0
-sub_811A4D0: @ 811A4D0
-	push {r4,lr}
-	adds r4, r0, 0
-	bl sub_811C13C
-	bl sub_811AA90
-	bl sub_811F2B8
-	bl FreeAllWindowBuffers
-	adds r0, r4, 0
-	bl SetMainCallback2
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_811A4D0
-
 	thumb_func_start easy_chat_input_maybe
 easy_chat_input_maybe: @ 811A4F0
 	push {r4,r5,lr}
diff --git a/src/easy_chat.c b/src/easy_chat.c
index 8ee46e215..1ff0ccc33 100644
--- a/src/easy_chat.c
+++ b/src/easy_chat.c
@@ -6,11 +6,19 @@
 #include "rom4.h"
 #include "task.h"
 #include "main.h"
+#include "window.h"
 #include "palette.h"
 #include "easy_chat.h"
 
 // Static type declarations
 
+#define EZCHAT_TASK_STATE        0
+#define EZCHAT_TASK_UNK01        1
+#define EZCHAT_TASK_UNK02        2
+#define EZCHAT_TASK_MAINCALLBACK 4
+#define EZCHAT_TASK_UNK06        6
+#define EZCHAT_TASK_UNK07        7
+
 // Static RAM declarations
 static void sub_811A2C0(u8);
 static void sub_811A278(void);
@@ -21,11 +29,14 @@ static void sub_811A2FC(u8);
 /*static*/ void sub_811C158(u16);
 /*static*/ bool8 sub_811C170(void);
 /*static*/ void sub_811A8A4(u16);
-/*static*/ void sub_811A4D0(u32);
+/*static*/ void sub_811A4D0(MainCallback);
 bool8 sub_811F28C(void);
 bool8 sub_811A95C(u8, u32, u8);
 bool8 sub_811BF8C(void);
 bool8 sub_811BFA4(void);
+void sub_811C13C(void);
+void sub_811AA90(void);
+void sub_811F2B8(void);
 
 // Static ROM declarations
 
@@ -33,16 +44,16 @@ bool8 sub_811BFA4(void);
 
 // .text
 
-void sub_811A20C(u8 a0, u32 a1, u32 a2, u8 a3)
+void sub_811A20C(u8 a0, u32 a1, MainCallback callback, u8 a3)
 {
     u8 taskId;
 
     ResetTasks();
     taskId = CreateTask(sub_811A2C0, 0);
-    gTasks[taskId].data[1] = a0;
-    gTasks[taskId].data[7] = a3;
-    SetWordTaskArg(taskId, 0x02, a1);
-    SetWordTaskArg(taskId, 0x04, a2);
+    gTasks[taskId].data[EZCHAT_TASK_UNK01] = a0;
+    gTasks[taskId].data[EZCHAT_TASK_UNK07] = a3;
+    SetWordTaskArg(taskId, EZCHAT_TASK_UNK02, a1);
+    SetWordTaskArg(taskId, EZCHAT_TASK_MAINCALLBACK, (u32)callback);
     SetMainCallback2(sub_811A278);
 }
 
@@ -64,7 +75,7 @@ static void sub_811A290(void)
 static void sub_811A2A4(u8 taskId, TaskFunc taskFunc)
 {
     gTasks[taskId].func = taskFunc;
-    gTasks[taskId].data[0] = 0;
+    gTasks[taskId].data[EZCHAT_TASK_STATE] = 0;
 }
 
 static void sub_811A2C0(u8 taskId)
@@ -89,56 +100,56 @@ static void sub_811A2FC(u8 taskId)
     s16 *data;
 
     data = gTasks[taskId].data;
-    switch (data[0])
+    switch (data[EZCHAT_TASK_STATE])
     {
         case 0:
             SetVBlankCallback(sub_811A290);
             BlendPalettes(-1, 16, 0);
             BeginNormalPaletteFade(-1, -1, 16, 0, 0);
-            data[0] = 5;
+            data[EZCHAT_TASK_STATE] = 5;
             break;
         case 1:
             v0 = sub_811AAAC();
             if (sub_811A88C(v0))
             {
                 BeginNormalPaletteFade(-1, -2, 0, 16, 0);
-                data[0] = 3;
-                data[6] = v0;
+                data[EZCHAT_TASK_STATE] = 3;
+                data[EZCHAT_TASK_UNK06] = v0;
             }
             else if (v0 == 0x18)
             {
                 BeginNormalPaletteFade(-1, -1, 0, 16, 0);
-                data[0] = 4;
+                data[EZCHAT_TASK_STATE] = 4;
             }
             else if (v0 != 0)
             {
                 PlaySE(SE_SELECT);
                 sub_811C158(v0);
-                data[0] ++;
+                data[EZCHAT_TASK_STATE] ++;
             }
             break;
         case 2:
             if (!sub_811C170())
             {
-                data[0] = 1;
+                data[EZCHAT_TASK_STATE] = 1;
             }
             break;
         case 3:
             if (!gPaletteFade.active)
             {
-                sub_811A8A4(data[6]);
+                sub_811A8A4(data[EZCHAT_TASK_UNK06]);
             }
             break;
         case 4:
             if (!gPaletteFade.active)
             {
-                sub_811A4D0(GetWordTaskArg(taskId, 0x04));
+                sub_811A4D0((MainCallback)GetWordTaskArg(taskId, EZCHAT_TASK_MAINCALLBACK));
             }
             break;
         case 5:
             if (!gPaletteFade.active)
             {
-                data[0] = 1;
+                data[EZCHAT_TASK_STATE] = 1;
             }
             break;
     }
@@ -149,7 +160,7 @@ static bool8 sub_811A428(u8 taskId)
     s16 *data;
 
     data = gTasks[taskId].data;
-    switch (data[0])
+    switch (data[EZCHAT_TASK_STATE])
     {
         case 0:
             SetVBlankCallback(NULL);
@@ -160,19 +171,19 @@ static bool8 sub_811A428(u8 taskId)
         case 1:
             if (!sub_811F28C())
             {
-                sub_811A4D0(GetWordTaskArg(taskId, 0x04));
+                sub_811A4D0((MainCallback)GetWordTaskArg(taskId, EZCHAT_TASK_MAINCALLBACK));
             }
             break;
         case 2:
-            if (!sub_811A95C(data[1], GetWordTaskArg(taskId, 0x02), data[7]))
+            if (!sub_811A95C(data[EZCHAT_TASK_UNK01], GetWordTaskArg(taskId, EZCHAT_TASK_UNK02), data[EZCHAT_TASK_UNK07]))
             {
-                sub_811A4D0(GetWordTaskArg(taskId, 0x04));
+                sub_811A4D0((MainCallback)GetWordTaskArg(taskId, EZCHAT_TASK_MAINCALLBACK));
             }
             break;
         case 3:
             if (!sub_811BF8C())
             {
-                sub_811A4D0(GetWordTaskArg(taskId, 0x04));
+                sub_811A4D0((MainCallback)GetWordTaskArg(taskId, EZCHAT_TASK_MAINCALLBACK));
             }
             break;
         case 4:
@@ -184,6 +195,15 @@ static bool8 sub_811A428(u8 taskId)
         default:
             return FALSE;
     }
-    data[0] ++;
+    data[EZCHAT_TASK_STATE] ++;
     return TRUE;
 }
+
+void sub_811A4D0(MainCallback callback)
+{
+    sub_811C13C();
+    sub_811AA90();
+    sub_811F2B8();
+    FreeAllWindowBuffers();
+    SetMainCallback2(callback);
+}