diff --git a/src/mame/drivers/sfbonus.c b/src/mame/drivers/sfbonus.c
index 5ce09859b1c..820cd4ccd8c 100644
--- a/src/mame/drivers/sfbonus.c
+++ b/src/mame/drivers/sfbonus.c
@@ -462,7 +462,7 @@ public:
 	TILE_GET_INFO_MEMBER(get_sfbonus_reel4_tile_info);
 	virtual void machine_reset();
 	virtual void video_start();
-	void draw_reel_layer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int category);
+	void draw_reel_layer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int catagory);
 	UINT32 screen_update_sfbonus(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
 };
 
@@ -929,7 +929,7 @@ void sfbonus_state::video_start()
 
 }
 
-void sfbonus_state::draw_reel_layer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int category)
+void sfbonus_state::draw_reel_layer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int catagory)
 {
 	int zz;
 	int i;
@@ -1021,38 +1021,38 @@ void sfbonus_state::draw_reel_layer(screen_device &screen, bitmap_ind16 &bitmap,
 
 		if (rowenable2==0)
 		{
-			m_reel_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),3);
+			m_reel_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),3);
 		}
 		if (rowenable==0)
 		{
-			m_reel_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),3);
+			m_reel_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),3);
 		}
 
 		if (rowenable2==0x1)
 		{
-			m_reel2_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),2);
+			m_reel2_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),2);
 		}
 		if (rowenable==0x1)
 		{
-			m_reel2_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),2);
+			m_reel2_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),2);
 		}
 
 		if (rowenable2==0x2)
 		{
-			m_reel3_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),1);
+			m_reel3_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),1);
 		}
 		if (rowenable==0x2)
 		{
-			m_reel3_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),1);
+			m_reel3_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),1);
 		}
 
 		if (rowenable2==0x3)
 		{
-			m_reel4_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),4);
+			m_reel4_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),4);
 		}
 		if (rowenable==0x3)
 		{
-			m_reel4_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(category),4);
+			m_reel4_tilemap->draw(screen, *m_temp_reel_bitmap, clip, TILEMAP_DRAW_CATEGORY(catagory),4);
 		}
 
 
diff --git a/src/mame/video/tia.c b/src/mame/video/tia.c
index 33cfdda6bae..bf523eda781 100644
--- a/src/mame/video/tia.c
+++ b/src/mame/video/tia.c
@@ -481,7 +481,7 @@ void tia_video_device::draw_sprite_helper(UINT8* p, UINT8 *col, struct player_gf
 
 
 void tia_video_device::draw_missile_helper(UINT8* p, UINT8* col, int horz, int skipdelay, int latch, int start,
-	UINT8 RESMP, UINT8 ENAM, UINT8 NUSIZ, UINT8 COLUMN)
+	UINT8 RESMP, UINT8 ENAM, UINT8 NUSIZ, UINT8 COLUM)
 {
 	int num = nusiz[NUSIZ & 7][0];
 	int skp = nusiz[NUSIZ & 7][2];
@@ -508,27 +508,27 @@ void tia_video_device::draw_missile_helper(UINT8* p, UINT8* col, int horz, int s
 							if ( horz >= 0 )
 							{
 								if ( horz < 156 ) {
-									p[(horz + 1) % 160] = COLUMN >> 1;
-									col[(horz + 1) % 160] = COLUMN >> 1;
+									p[(horz + 1) % 160] = COLUM >> 1;
+									col[(horz + 1) % 160] = COLUM >> 1;
 								}
-								p[horz % 160] = COLUMN >> 1;
-								col[horz % 160] = COLUMN >> 1;
+								p[horz % 160] = COLUM >> 1;
+								col[horz % 160] = COLUM >> 1;
 							}
 							break;
 						case 2:
 						case 3:
 							if ( horz >= 0 )
 							{
-								p[horz % 160] = COLUMN >> 1;
-								col[horz % 160] = COLUMN >> 1;
+								p[horz % 160] = COLUM >> 1;
+								col[horz % 160] = COLUM >> 1;
 							}
 							break;
 						}
 					} else {
 						if ( horz >= 0 )
 						{
-							p[horz % 160] = COLUMN >> 1;
-							col[horz % 160] = COLUMN >> 1;
+							p[horz % 160] = COLUM >> 1;
+							col[horz % 160] = COLUM >> 1;
 						}
 					}
 				}
diff --git a/src/mame/video/tia.h b/src/mame/video/tia.h
index 88a51c0ec07..545a3898aca 100644
--- a/src/mame/video/tia.h
+++ b/src/mame/video/tia.h
@@ -66,7 +66,7 @@ protected:
 	virtual void device_reset();
 
 	void draw_sprite_helper(UINT8* p, UINT8 *col, struct player_gfx *gfx, UINT8 GRP, UINT8 COLUP, UINT8 REFP);
-	void draw_missile_helper(UINT8* p, UINT8* col, int horz, int skipdelay, int latch, int start, UINT8 RESMP, UINT8 ENAM, UINT8 NUSIZ, UINT8 COLUMN);
+	void draw_missile_helper(UINT8* p, UINT8* col, int horz, int skipdelay, int latch, int start, UINT8 RESMP, UINT8 ENAM, UINT8 NUSIZ, UINT8 COLUM);
 	void draw_playfield_helper(UINT8* p, UINT8* col, int horz, UINT8 COLU, UINT8 REFPF);
 	void draw_ball_helper(UINT8* p, UINT8* col, int horz, UINT8 ENAB);
 	void drawS0(UINT8* p, UINT8* col);