diff --git a/src/game/bg.c b/src/game/bg.c
index f02443ede..91f0d0006 100644
--- a/src/game/bg.c
+++ b/src/game/bg.c
@@ -2733,7 +2733,7 @@ bool func0f15d08c(struct coord *a, struct coord *b)
 	return true;
 }
 
-bool g_PortalGetScreenBbox(s32 portalnum, struct screenbox *box)
+bool portalGetScreenBbox(s32 portalnum, struct screenbox *box)
 {
 	s32 i;
 	s32 j;
@@ -6562,7 +6562,7 @@ struct bgcmd *bgExecuteCommandsBranch(struct bgcmd *cmd, bool execute)
 		case BGCMD_SETRESULT_IFPORTALINFOV:
 			if (execute) {
 				if (!PORTAL_IS_CLOSED(cmd[1].param)) {
-					if (g_PortalGetScreenBbox(cmd[1].param, &g_PortalScreenBbox) == 0) {
+					if (portalGetScreenBbox(cmd[1].param, &g_PortalScreenBbox) == 0) {
 						g_BgCmdResult = BGRESULT_FALSE;
 					} else if (boxGetIntersection(&var800a65c0, &g_PortalScreenBbox) == 0) {
 						g_BgCmdResult = BGRESULT_FALSE;
@@ -6578,7 +6578,7 @@ struct bgcmd *bgExecuteCommandsBranch(struct bgcmd *cmd, bool execute)
 				struct screenbox portalbox;
 
 				if (!PORTAL_IS_CLOSED(cmd[1].param)) {
-					if (g_PortalGetScreenBbox(cmd[1].param, &portalbox) && boxGetIntersection(&var800a65c0, &portalbox)) {
+					if (portalGetScreenBbox(cmd[1].param, &portalbox) && boxGetIntersection(&var800a65c0, &portalbox)) {
 						if (g_BgCmdResult != BGRESULT_TRUE) {
 							boxCopy(&var800a65c0, &portalbox);
 							g_BgCmdResult = BGRESULT_TRUE;
@@ -6597,7 +6597,7 @@ struct bgcmd *bgExecuteCommandsBranch(struct bgcmd *cmd, bool execute)
 
 					if (PORTAL_IS_CLOSED(cmd[1].param)) {
 						g_BgCmdResult = BGRESULT_FALSE;
-					} else if (g_PortalGetScreenBbox(cmd[1].param, &portalbox) == 0) {
+					} else if (portalGetScreenBbox(cmd[1].param, &portalbox) == 0) {
 						g_BgCmdResult = BGRESULT_FALSE;
 					} else if (boxGetIntersection(&portalbox, (struct screenbox *)&g_Vars.currentplayer->screenxminf) == 0) {
 						g_BgCmdResult = BGRESULT_FALSE;
@@ -7042,7 +7042,7 @@ void func0f163528(struct var800a4d00 *arg0)
 			box2.ymax = arg0->screenbox.ymax;
 			unk02 = true;
 		} else {
-			unk02 = g_PortalGetScreenBbox(portalnum, &box2);
+			unk02 = portalGetScreenBbox(portalnum, &box2);
 		}
 
 		if (unk02) {
diff --git a/src/game/challenge.c b/src/game/challenge.c
index c34eeeac8..7db26c74a 100644
--- a/src/game/challenge.c
+++ b/src/game/challenge.c
@@ -64,7 +64,7 @@ bool challengeIsAvailable(s32 challengeindex)
 	return (g_MpChallenges[challengeindex].availability & 1) != 0;
 }
 
-bool ChallengeIsAvailableToPlayer(s32 chrnum, s32 challengeindex)
+bool challengeIsAvailableToPlayer(s32 chrnum, s32 challengeindex)
 {
 	if ((g_MpSetup.chrslots & (1 << chrnum)) == 0) {
 		return 0;
@@ -198,7 +198,7 @@ void challengeDetermineUnlockedFeatures(void)
 
 		for (challengeindex = 0; challengeindex < 30; challengeindex++) {
 			for (prev = 0; prev < 4; prev++) {
-				if (ChallengeIsAvailableToPlayer(prev, challengeindex)) {
+				if (challengeIsAvailableToPlayer(prev, challengeindex)) {
 					for (i = 0; i < 16; i++) {
 						if (g_MpChallenges[challengeindex].unlockfeatures[i] == j) {
 							flag |= 2 << prev;
diff --git a/src/include/game/bg.h b/src/include/game/bg.h
index 696bd47d0..ede82bc09 100644
--- a/src/include/game/bg.h
+++ b/src/include/game/bg.h
@@ -40,7 +40,7 @@ Gfx *currentPlayerScissorWithinViewport(Gfx *gdl, s32 viewleft, s32 viewtop, s32
 void func0f15cd28(void);
 bool func0f15cd90(u32 room, struct screenbox *arg1);
 bool func0f15d08c(struct coord *a, struct coord *b);
-bool g_PortalGetScreenBbox(s32 portal, struct screenbox *arg1);
+bool portalGetScreenBbox(s32 portal, struct screenbox *arg1);
 Gfx *boxRenderBorder(Gfx *gdl, s32 x1, s32 y1, s32 x2, s32 y2);
 bool boxGetIntersection(struct screenbox *a, struct screenbox *b);
 void boxExpand(struct screenbox *a, struct screenbox *b);
diff --git a/src/include/game/challenge.h b/src/include/game/challenge.h
index 99cac61d4..fe32d1f85 100644
--- a/src/include/game/challenge.h
+++ b/src/include/game/challenge.h
@@ -25,7 +25,7 @@ char *challengeGetConfigDescription(struct mpconfigfull *mpconfig);
 bool challengeIsCompleteForEndscreen(void);
 bool aiMpInitSimulants(void);
 void vmPrintStatsIfEnabled(void);
-bool ChallengeIsAvailableToPlayer(s32 chrnum, s32 challengeindex);
+bool challengeIsAvailableToPlayer(s32 chrnum, s32 challengeindex);
 bool challengeIsAvailableToAnyPlayer(s32 challengeindex);
 s32 challengeGetNumAvailable(void);
 char *challengeGetName(s32 challengeindex);