diff --git a/src/pilot.h b/src/pilot.h
index 7a09f4f..6c3b2f0 100644
--- a/src/pilot.h
+++ b/src/pilot.h
@@ -1,12 +1,11 @@
 #pragma once
-#include "lephisto.h"
 #include "physics.h"
+#include "ship.h"
 #include "ai.h"
 #include "outfit.h"
 #include "faction.h"
 #include "sound.h"
 #include "economy.h"
-#include "ship.h"
 
 #define PLAYER_ID 1
 
diff --git a/src/ship.h b/src/ship.h
index c4c3cf5..2ebe8ac 100644
--- a/src/ship.h
+++ b/src/ship.h
@@ -1,7 +1,7 @@
 #pragma once
-#include "lephisto.h"
-#include "outfit.h"
 #include "opengl.h"
+#include "outfit.h"
+#include "sound.h"
 
 // Target gfx dimensions.
 #define SHIP_TARGET_W 128
diff --git a/src/sound.c b/src/sound.c
index f39f42c..313bfb2 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -450,7 +450,7 @@ static int voice_getSource(alVoice* voc) {
 static void voice_init(alVoice* voice) {
   // Distance model.
   alSourcef(voice->source, AL_ROLLOFF_FACTOR, SOUND_ROLLOFF_FACTOR);
-  alSourcef(voice->source, AL_MAX_DISTANCE, SOUN_MAX_DIST);
+  alSourcef(voice->source, AL_MAX_DISTANCE, SOUND_MAX_DIST);
   alSourcef(voice->source, AL_REFERENCE_DISTANCE, SOUND_REFERENCE_DIST);
 
   alSourcei(voice->source, AL_SOURCE_RELATIVE, AL_FALSE);
diff --git a/src/sound.h b/src/sound.h
index 4ede647..9ef5a53 100644
--- a/src/sound.h
+++ b/src/sound.h
@@ -20,7 +20,7 @@ void sound_volume(const double vol);
 alVoice* sound_addVoice(int priority, double px, double py,
     double vx, double vy, const ALuint buffer, const int flags);
 
-void sound_delVoice(alVoice(alVoice* voice); // Delete voice.
+void sound_delVoice(alVoice* voice); // Delete voice.
 
 void voice_update(alVoice* voice, double px, double py, double vx, double vy);
 void voice_buffer(alVoice* voice, const ALuint buffer, const int flags);