1 files changed, 2 insertions, 1 deletions
diff --git a/alc/alu.h b/alc/alu.h
index b3cfd840..84a6d81b 100644
--- a/alc/alu.h
+++ b/alc/alu.h
@@ -148,7 +148,8 @@ inline std::array<ALfloat,MAX_AMBI_CHANNELS> GetAmbiIdentityRow(size_t i) noexce
 }
 
 
-void aluMixData(ALCdevice *device, ALvoid *OutBuffer, const ALuint NumSamples);
+void aluMixData(ALCdevice *device, void *OutBuffer, const ALuint NumSamples,
+    const size_t FrameStep);
 /* 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);