diff --git a/main_gui.c b/main_gui.c
index 3254ffeb57..9726239c3a 100644
--- a/main_gui.c
+++ b/main_gui.c
@@ -531,12 +531,7 @@ static int GetPlayerIndexFromMenu(int index)
 
 static void UpdatePlayerMenuHeight(Window *w)
 {
-	uint num = 0;
-	const Player *p;
-
-	FOR_ALL_PLAYERS(p) {
-		if (p->is_active) num++;
-	}
+	byte num = ActivePlayerCount();
 
 	// Increase one to fit in PlayerList in the menu when in network
 	if (_networking && WP(w,menu_d).main_button == 9) num++;
diff --git a/player.h b/player.h
index 55aec0ce98..384afe4c4b 100644
--- a/player.h
+++ b/player.h
@@ -216,7 +216,17 @@ VARDEF Player _players[MAX_PLAYERS];
 // NOSAVE: can be determined from player structs
 VARDEF byte _player_colors[MAX_PLAYERS];
 
-byte ActivePlayerCount(void);
+static inline byte ActivePlayerCount(void)
+{
+	const Player *p;
+	byte count = 0;
+
+	FOR_ALL_PLAYERS(p) {
+		if (p->is_active) count++;
+	}
+
+	return count;
+}
 
 static inline Player* GetPlayer(PlayerID i)
 {
diff --git a/players.c b/players.c
index b4a279ab65..93f559d5aa 100644
--- a/players.c
+++ b/players.c
@@ -192,18 +192,6 @@ void DrawPlayerFace(uint32 face, int color, int x, int y)
 	}
 }
 
-byte ActivePlayerCount(void)
-{
-	const Player *p;
-	byte count = 0;
-
-	FOR_ALL_PLAYERS(p) {
-		if (p->is_active) count++;
-	}
-
-	return count;
-}
-
 void InvalidatePlayerWindows(const Player *p)
 {
 	PlayerID pid = p->index;