diff --git a/include/d/d_map.h b/include/d/d_map.h
index 6b8274a15..7d5bda492 100644
--- a/include/d/d_map.h
+++ b/include/d/d_map.h
@@ -530,7 +530,6 @@ public:
 };
 
 BOOL dMap_GetTopBottomFloorNo(dStage_dt_c* stag, u8* bottom_p, u8* top_p);
-u8 dMap_GetFloorNoForDmap(dStage_dt_c* stag, int param_2, f32 param_3);
 u8 dMap_GetFloorNo(dStage_dt_c*, f32);
 
 inline void dMap_drawPoint(u8 param_1, f32 param_2, f32 param_3, f32 param_4, s8 param_5, s16 param_6, u8 param_7, u8 param_8, u8 param_9) {
diff --git a/src/d/d_map.cpp b/src/d/d_map.cpp
index 13faef716..53b045788 100644
--- a/src/d/d_map.cpp
+++ b/src/d/d_map.cpp
@@ -292,7 +292,7 @@ dStage_FloorInfo_dt_c* dMap_GetFloorInfoDtPFromFloorNo(dStage_FloorInfo_c* floor
 }
 
 /* 80045AEC-80045C24       .text dMap_GetFloorNoForDmap__FP11dStage_dt_cif */
-u8 dMap_GetFloorNoForDmap(dStage_dt_c* stag, int param_2, f32 param_3) {
+int dMap_GetFloorNoForDmap(dStage_dt_c* stag, int param_2, f32 param_3) {
     dStage_FloorInfo_c* floor = stag->getFloorInfo();
     int floorNo = Floor_1F;
     dStage_FloorInfo_dt_c* floorData = dMap_GetFloorInfoDtP(floor, param_3);
diff --git a/src/d/d_menu_dmap.cpp b/src/d/d_menu_dmap.cpp
index 8199cdf77..b71905595 100644
--- a/src/d/d_menu_dmap.cpp
+++ b/src/d/d_menu_dmap.cpp
@@ -18,6 +18,8 @@
 #include "m_Do/m_Do_audio.h"
 #include "m_Do/m_Do_controller_pad.h"
 
+u8 dMap_GetFloorNoForDmap(dStage_dt_c*, int, f32);
+
 dMd_HIO_c g_mdHIO;
 
 /* 801A86A4-801A87CC       .text __ct__9dMd_HIO_cFv */