2 files changed, 4 insertions, 4 deletions
diff --git a/OpenAL32/Include/alFilter.h b/OpenAL32/Include/alFilter.h
index f70b839e..9273f15c 100644
--- a/OpenAL32/Include/alFilter.h
+++ b/OpenAL32/Include/alFilter.h
@@ -47,6 +47,8 @@ ALfloat lpCoeffCalc(ALfloat g, ALfloat cw);
 
 
 typedef enum ALfilterType {
+    ALfilterType_LowPass,
+
     ALfilterType_HighShelf,
     ALfilterType_LowShelf,
     ALfilterType_Peaking,
diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index bd1b2931..8766c85e 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -61,8 +61,7 @@ typedef struct DirectParams {
      * target (eg. FrontLeft). Not used with HRTF. */
     ALfloat Gains[MaxChannels][MaxChannels];
 
-    /* A low-pass filter, using 2 chained one-pole filters. */
-    FILTER Filter[MaxChannels];
+    ALfilterState Filter[MaxChannels];
 } DirectParams;
 
 typedef struct SendParams {
@@ -72,8 +71,7 @@ typedef struct SendParams {
      * output buffer. */
     ALfloat Gain;
 
-    /* A low-pass filter, using 2 chained one-pole filters. */
-    FILTER Filter[MaxChannels];
+    ALfilterState Filter[MaxChannels];
 } SendParams;