diff --git a/source/games/exhumed/src/sound.cpp b/source/games/exhumed/src/sound.cpp
index 7ef8b5af8..edea1e55e 100644
--- a/source/games/exhumed/src/sound.cpp
+++ b/source/games/exhumed/src/sound.cpp
@@ -553,7 +553,7 @@ void GameInterface::UpdateSounds()
 
 int soundx, soundy, soundz;
 
-void PlayFX2(unsigned int nSound, DExhumedActor* pActor, int sectf, EChanFlags chanflags, int sprflags)
+void PlayFX2(int nSound, DExhumedActor* pActor, int sectf, EChanFlags chanflags, int sprflags)
 {
     if (!SoundEnabled()) return;
     if ((nSound&0x1ff) >= kMaxSounds || !soundEngine->isValidSoundId((nSound & 0x1ff)+1))
@@ -654,7 +654,7 @@ void PlayFX2(unsigned int nSound, DExhumedActor* pActor, int sectf, EChanFlags c
 //
 //==========================================================================
 
-void PlayFXAtXYZ(unsigned int ax, int x, int y, int z, EChanFlags chanflags, int sectf)
+void PlayFXAtXYZ(int ax, int x, int y, int z, EChanFlags chanflags, int sectf)
 {
     soundx = x;
     soundy = y;
diff --git a/source/games/exhumed/src/sound.h b/source/games/exhumed/src/sound.h
index 0bc203283..29f9b5ebf 100644
--- a/source/games/exhumed/src/sound.h
+++ b/source/games/exhumed/src/sound.h
@@ -130,10 +130,10 @@ int LoadSound(const char* sound);
 void BendAmbientSound();
 void CheckAmbience(sectortype* pSector);
 
-void PlayFX2(unsigned int nSound, DExhumedActor* nSprite, int sectf = 0, EChanFlags chanflags = CHANF_NONE, int sprflags = 0);
+void PlayFX2(int nSound, DExhumedActor* nSprite, int sectf = 0, EChanFlags chanflags = CHANF_NONE, int sprflags = 0);
 
-void PlayFXAtXYZ(unsigned int nSound, int x, int y, int z, EChanFlags chanflags = CHANF_NONE, int sectf = 0);
-inline void D3PlayFX(unsigned int nSound, DExhumedActor* actor, int flags = 0)
+void PlayFXAtXYZ(int nSound, int x, int y, int z, EChanFlags chanflags = CHANF_NONE, int sectf = 0);
+inline void D3PlayFX(int nSound, DExhumedActor* actor, int flags = 0)
 {
     PlayFX2(nSound, actor, 0, CHANF_NONE, flags);
 }