1 files changed, 1 insertions, 1 deletions
diff --git a/alc/alu.h b/alc/alu.h
index c4848e3e..df20ea4a 100644
--- a/alc/alu.h
+++ b/alc/alu.h
@@ -446,7 +446,7 @@ inline std::array<ALfloat,MAX_AMBI_CHANNELS> GetAmbiIdentityRow(size_t i) noexce
 
 void MixVoice(ALvoice *voice, ALvoice::State vstate, const ALuint SourceID, ALCcontext *Context, const ALuint SamplesToDo);
 
-void aluMixData(ALCdevice *device, ALvoid *OutBuffer, ALsizei NumSamples);
+void aluMixData(ALCdevice *device, ALvoid *OutBuffer, const ALuint NumSamples);
 /* Caller must lock the device state, and the mixer must not be running. */
 void aluHandleDisconnect(ALCdevice *device, const char *msg, ...) DECL_FORMAT(printf, 2, 3);