diff --git a/config/eur/arm9/overlays/ov000/symbols.txt b/config/eur/arm9/overlays/ov000/symbols.txt
index 4a84f67e..528f1d22 100644
--- a/config/eur/arm9/overlays/ov000/symbols.txt
+++ b/config/eur/arm9/overlays/ov000/symbols.txt
@@ -521,7 +521,7 @@ _ZN10MapManager9CreateMapEiii kind:function(arm,size=0x100) addr:0x20826c0
 _ZN10MapManager10DestroyMapEv kind:function(arm,size=0x30) addr:0x20827c0
 _ZN10MapManager16MapData_vfunc_44Ev kind:function(arm,size=0x18) addr:0x20827f0
 _ZN10MapManager18func_ov00_02082808Ei kind:function(arm,size=0xb8) addr:0x2082808
-_ZN10MapManager16MapData_vfunc_7cEv kind:function(arm,size=0x20) addr:0x20828c0
+_ZN10MapManager16MapData_vfunc_7cEiPiiPs kind:function(arm,size=0x20) addr:0x20828c0
 _ZN10MapManager16MapData_vfunc_84Ei kind:function(arm,size=0x18) addr:0x20828e0
 _ZN10MapManager18func_ov00_020828f8EPi kind:function(arm,size=0x10) addr:0x20828f8
 _ZN10MapManager10GetNumMapsEv kind:function(arm,size=0xc) addr:0x2082908
diff --git a/config/usa/arm9/overlays/ov000/symbols.txt b/config/usa/arm9/overlays/ov000/symbols.txt
index 46c2987c..d7e06342 100644
--- a/config/usa/arm9/overlays/ov000/symbols.txt
+++ b/config/usa/arm9/overlays/ov000/symbols.txt
@@ -521,7 +521,7 @@ _ZN10MapManager9CreateMapEiii kind:function(arm,size=0x100) addr:0x2082660
 _ZN10MapManager10DestroyMapEv kind:function(arm,size=0x30) addr:0x2082760
 _ZN10MapManager16MapData_vfunc_44Ev kind:function(arm,size=0x18) addr:0x2082790
 _ZN10MapManager18func_ov00_02082808Ei kind:function(arm,size=0xb8) addr:0x20827a8
-_ZN10MapManager16MapData_vfunc_7cEv kind:function(arm,size=0x20) addr:0x2082860
+_ZN10MapManager16MapData_vfunc_7cEiPiiPs kind:function(arm,size=0x20) addr:0x2082860
 _ZN10MapManager16MapData_vfunc_84Ei kind:function(arm,size=0x18) addr:0x2082880
 _ZN10MapManager18func_ov00_020828f8EPi kind:function(arm,size=0x10) addr:0x2082898
 _ZN10MapManager10GetNumMapsEv kind:function(arm,size=0xc) addr:0x20828a8
diff --git a/include/Map/MapOverworld.hpp b/include/Map/MapOverworld.hpp
index 482b3ad1..4ce6d91a 100644
--- a/include/Map/MapOverworld.hpp
+++ b/include/Map/MapOverworld.hpp
@@ -46,7 +46,7 @@ public:
     /* 1c */ virtual void vfunc_1c(bool param_2) override;
     /* 20 */ virtual void vfunc_20(s32 param_2) override;
     /* 2c */ virtual void vfunc_2c() override;
-    /* 4c */ virtual void vfunc_4c() override;
+    /* 4c */ virtual s32 vfunc_4c() override;
     /* 54 */ virtual unk32 vfunc_54() override;
     /* 58 */ virtual unk32 vfunc_58() override;
     /* 5c */ virtual unk32 vfunc_5c() override;
@@ -58,7 +58,7 @@ public:
     /* 94 */ virtual void vfunc_94() override;
     /* 98 */ virtual void vfunc_98() override;
     /* a4 */ virtual unk32 vfunc_a4() override;
-    /* b0 */ virtual unk8 vfunc_b0(unk32 param_2, unk32 param_3) override;
+    /* b0 */ virtual void vfunc_b0(unk32 param_2, unk32 param_3) override;
     /* bc */ virtual void vfunc_bc() override;
     /* c0 */ virtual void vfunc_c0() override;
     /* c4 */
diff --git a/src/18_Overworld/Map/MapOverworld.cpp b/src/18_Overworld/Map/MapOverworld.cpp
index 5737ea54..e2c73db7 100644
--- a/src/18_Overworld/Map/MapOverworld.cpp
+++ b/src/18_Overworld/Map/MapOverworld.cpp
@@ -25,7 +25,7 @@ void MapOverworld::vfunc_c0() {}
 unk32 MapOverworld::vfunc_78() {}
 unk32 MapOverworld::vfunc_7c() {}
 unk32 MapOverworld::vfunc_80() {}
-unk8 MapOverworld::vfunc_b0(unk32 param_2, unk32 param_3) {}
+void MapOverworld::vfunc_b0(unk32 param_2, unk32 param_3) {}
 void MapOverworld::func_ov018_0215c650() {}
 void MapOverworld::func_ov018_0215c6ac() {}
 void MapOverworld::func_ov018_0215c6d0() {}
@@ -35,4 +35,4 @@ void MapOverworld::func_ov018_0215c9ac() {}
 void func_ov018_0215ca24(s32 param1) {}
 void func_ov018_0215ca3c(s32 param1, s32 param2, unk32 param3, unk32 param4) {}
 void func_ov018_0215ca8c(s32 param1) {}
-void MapOverworld::vfunc_4c() {}
+s32 MapOverworld::vfunc_4c() {}