diff --git a/include/bg.h b/include/bg.h
deleted file mode 100644
index b9410afa3..000000000
--- a/include/bg.h
+++ /dev/null
@@ -1,70 +0,0 @@
-#ifndef GUARD_BG_H
-#define GUARD_BG_H
-
-#include "global.h"
-
-enum {
-    BG_CTRL_ATTR_VISIBLE = 1,
-    BG_CTRL_ATTR_CHARBASEINDEX = 2,
-    BG_CTRL_ATTR_MAPBASEINDEX = 3,
-    BG_CTRL_ATTR_SCREENSIZE = 4,
-    BG_CTRL_ATTR_PALETTEMODE = 5,
-    BG_CTRL_ATTR_PRIORITY = 6,
-    BG_CTRL_ATTR_MOSAIC = 7,
-    BG_CTRL_ATTR_WRAPAROUND = 8,
-};
-
-struct BgControl {
-    struct BgConfig {
-        u16 visible:1;
-        u16 unknown_1:1;
-        u16 screenSize:2;
-        u16 priority:2;
-        u16 mosaic:1;
-        u16 wraparound:1;
-        
-        u16 charBaseIndex:2;
-        u16 mapBaseIndex:5;
-        u16 paletteMode:1;
-        
-        u8 unknown_2;
-        u8 unknown_3;
-    } configs[4];
-    
-    u16 bgVisibilityAndMode;
-};
-
-struct BgTemplate {
-    u32 bg:2;
-    u32 charBaseIndex:2;
-    u32 mapBaseIndex:5;
-    u32 screenSize:2;
-    u32 paletteMode:1;
-    u32 priority:2;
-    u32 baseTile:10;
-};
-
-struct BgConfig2 {
-    u32 baseTile:10;
-    u32 basePalette:4;
-    u32 unk_3:18;
-    
-    void* tilemap;
-    u32 bg_x;
-    u32 bg_y;
-};
-
-bool32 IsInvalidBg32(u8);
-void ResetBgControlStructs();
-u16 GetBgMetricTextMode(u8, u8);
-u32 GetBgMetricAffineMode(u8, u8);
-u32 GetBgType(u8);
-void SetTextModeAndHideBgs();
-bool8 IsInvalidBg(u8);
-bool32 IsTileMapOutsideWram(u8);
-void CopyRectToBgTilemapBufferRect(u8, void*, u8, u8, u8, u8, u8, u8, u8, u8, u8, u16, u16);
-void CopyTileMapEntry(u16*, u16*, s32, u32, u32);
-u32 GetTileMapIndexFromCoords(s32, s32, s32, u32, u32);
-void WriteSequenceToBgTilemapBuffer(u8, u16, u8, u8, u8, u8, u8, s16);
-
-#endif // GUARD_BG_H
diff --git a/src/bg.c b/src/bg.c
index d3c366659..ee26aaa89 100644
--- a/src/bg.c
+++ b/src/bg.c
@@ -1,9 +1,59 @@
 #include "global.h"
-#include "bg.h"
 #include "dma3.h"
 
 #define DISPCNT_ALL_BG_AND_MODE_BITS    0x0F07
 
+enum {
+    BG_CTRL_ATTR_VISIBLE = 1,
+    BG_CTRL_ATTR_CHARBASEINDEX = 2,
+    BG_CTRL_ATTR_MAPBASEINDEX = 3,
+    BG_CTRL_ATTR_SCREENSIZE = 4,
+    BG_CTRL_ATTR_PALETTEMODE = 5,
+    BG_CTRL_ATTR_PRIORITY = 6,
+    BG_CTRL_ATTR_MOSAIC = 7,
+    BG_CTRL_ATTR_WRAPAROUND = 8,
+};
+
+struct BgControl {
+    struct BgConfig {
+        u16 visible:1;
+        u16 unknown_1:1;
+        u16 screenSize:2;
+        u16 priority:2;
+        u16 mosaic:1;
+        u16 wraparound:1;
+        
+        u16 charBaseIndex:2;
+        u16 mapBaseIndex:5;
+        u16 paletteMode:1;
+        
+        u8 unknown_2;
+        u8 unknown_3;
+    } configs[4];
+    
+    u16 bgVisibilityAndMode;
+};
+
+struct BgTemplate {
+    u32 bg:2;
+    u32 charBaseIndex:2;
+    u32 mapBaseIndex:5;
+    u32 screenSize:2;
+    u32 paletteMode:1;
+    u32 priority:2;
+    u32 baseTile:10;
+};
+
+struct BgConfig2 {
+    u32 baseTile:10;
+    u32 basePalette:4;
+    u32 unk_3:18;
+    
+    void* tilemap;
+    u32 bg_x;
+    u32 bg_y;
+};
+
 static struct BgControl gGpuBgConfigs;
 static struct BgConfig2 gGpuBgConfigs2[4];
 static u32 gDmaBusyBitfield[4];
@@ -17,6 +67,19 @@ extern void SetGpuReg_ForcedBlank(u8 regOffset, u16 value);
 extern u16 GetGpuReg(u8 regOffset);
 extern int CheckForSpaceForDma3Request(s16 index);
 
+bool32 IsInvalidBg32(u8);
+void ResetBgControlStructs();
+u16 GetBgMetricTextMode(u8, u8);
+u32 GetBgMetricAffineMode(u8, u8);
+u32 GetBgType(u8);
+void SetTextModeAndHideBgs();
+bool8 IsInvalidBg(u8);
+bool32 IsTileMapOutsideWram(u8);
+void CopyRectToBgTilemapBufferRect(u8, void*, u8, u8, u8, u8, u8, u8, u8, u8, u8, u16, u16);
+void CopyTileMapEntry(u16*, u16*, s32, u32, u32);
+u32 GetTileMapIndexFromCoords(s32, s32, s32, u32, u32);
+void WriteSequenceToBgTilemapBuffer(u8, u16, u8, u8, u8, u8, u8, s16);
+
 void ResetBgs(void)
 {
     ResetBgControlStructs();