diff --git a/src/boss.c b/src/boss.c
index 3a3be9ac..ab1e9a12 100644
--- a/src/boss.c
+++ b/src/boss.c
@@ -578,8 +578,7 @@ static void draw_spell_portrait(Boss *b, int time) {
 	r_state_pop();
 }
 
-DEPRECATED_DRAW_RULE
-static void BossGlow(Projectile *p, int t, ProjDrawRuleArgs args) {
+static void boss_glow_draw(Projectile *p, int t, ProjDrawRuleArgs args) {
 	float s = 1.0+t/(double)p->timeout*0.5;
 	float fade = 1 - (1.5 - s);
 	float deform = 5 - 10 * fade * fade;
@@ -598,13 +597,13 @@ static void BossGlow(Projectile *p, int t, ProjDrawRuleArgs args) {
 	});
 }
 
-static Projectile* spawn_boss_glow(Boss *boss, const Color *clr, int timeout) {
+static Projectile *spawn_boss_glow(Boss *boss, const Color *clr, int timeout) {
 	return PARTICLE(
 		.sprite_ptr = aniplayer_get_frame(&boss->ani),
 		// this is in sync with the boss position oscillation
 		.pos = boss->pos + 6 * sin(global.frames/25.0) * I,
 		.color = clr,
-		.draw_rule = BossGlow,
+		.draw_rule = boss_glow_draw,
 		.timeout = timeout,
 		.layer = LAYER_PARTICLE_LOW,
 		.shader = "sprite_silhouette",
@@ -1240,7 +1239,6 @@ void boss_reset_motion(Boss *boss) {
 	boss->move.retention = 0.8;
 }
 
-DEPRECATED_DRAW_RULE
 static void boss_death_effect_draw_overlay(Projectile *p, int t, ProjDrawRuleArgs args) {
 	FBPair *framebuffers = stage_get_fbpair(FBPAIR_FG);
 	r_framebuffer(framebuffers->front);
diff --git a/src/player.c b/src/player.c
index e13cd666..0d94c81c 100644
--- a/src/player.c
+++ b/src/player.c
@@ -432,7 +432,6 @@ static void _powersurge_trail_draw(Projectile *p, float t, float cmul) {
 	});
 }
 
-DEPRECATED_DRAW_RULE
 static void powersurge_trail_draw(Projectile *p, int t, ProjDrawRuleArgs args) {
 	if(t > 0) {
 		_powersurge_trail_draw(p, t - 0.5, 0.25);
@@ -710,7 +709,6 @@ static int powersurge_discharge(Projectile *p, int t) {
 	return ACTION_NONE;
 }
 
-DEPRECATED_DRAW_RULE
 static void powersurge_distortion_draw(Projectile *p, int t, ProjDrawRuleArgs args) {
 	if(config_get_int(CONFIG_POSTPROCESS) < 1) {
 		return;
diff --git a/src/projectile.c b/src/projectile.c
index 4d9ff59c..fe88fda8 100644
--- a/src/projectile.c
+++ b/src/projectile.c
@@ -925,7 +925,7 @@ void ProjDrawCore(Projectile *proj, const Color *c) {
 	projectile_draw_sprite(proj->sprite, c, proj->opacity, proj->scale);
 }
 
-void ProjDraw(Projectile *proj, int t, ProjDrawRuleArgs args) {
+static void pdraw_basic_func(Projectile *proj, int t, ProjDrawRuleArgs args) {
 	SpriteParamsBuffer spbuf;
 	SpriteParams sp = projectile_sprite_params(proj, &spbuf);
 
@@ -940,7 +940,7 @@ void ProjDraw(Projectile *proj, int t, ProjDrawRuleArgs args) {
 }
 
 ProjDrawRule pdraw_basic(void) {
-	return (ProjDrawRule) { ProjDraw };
+	return (ProjDrawRule) { pdraw_basic_func };
 }
 
 static void pdraw_blast_func(Projectile *p, int t, ProjDrawRuleArgs args) {
diff --git a/src/projectile.h b/src/projectile.h
index 3fcfd7a7..b5fe426c 100644
--- a/src/projectile.h
+++ b/src/projectile.h
@@ -233,7 +233,6 @@ int asymptotic(Projectile *p, int t);
 #define DEPRECATED_DRAW_RULE attr_deprecated("")
 
 void ProjDrawCore(Projectile *proj, const Color *c);
-void ProjDraw(Projectile *proj, int t, ProjDrawRuleArgs args) DEPRECATED_DRAW_RULE;
 
 void Shrink(Projectile *p, int t, ProjDrawRuleArgs) DEPRECATED_DRAW_RULE;
 void Fade(Projectile *p, int t, ProjDrawRuleArgs) DEPRECATED_DRAW_RULE;