diff --git a/dlls/msacm32/driver.c b/dlls/msacm32/driver.c
index 0843a05..15bb225 100644
--- a/dlls/msacm32/driver.c
+++ b/dlls/msacm32/driver.c
@@ -16,6 +16,8 @@
 #include "msacmdrv.h"
 #include "winreg.h"
 
+DEFAULT_DEBUG_CHANNEL(msacm)
+
 /***********************************************************************
  *           acmDriverAddA (MSACM32.2)
  */
diff --git a/dlls/msacm32/filter.c b/dlls/msacm32/filter.c
index 7420343..67d6604 100644
--- a/dlls/msacm32/filter.c
+++ b/dlls/msacm32/filter.c
@@ -11,6 +11,8 @@
 #include "msacmdrv.h"
 #include "debug.h"
 
+DEFAULT_DEBUG_CHANNEL(msacm)
+
 /***********************************************************************
  *           acmFilterChooseA (MSACM32.13)
  */
diff --git a/dlls/msacm32/format.c b/dlls/msacm32/format.c
index 1dc04ab..0d06c81 100644
--- a/dlls/msacm32/format.c
+++ b/dlls/msacm32/format.c
@@ -12,6 +12,8 @@
 #include "msacm.h"
 #include "msacmdrv.h"
 
+DEFAULT_DEBUG_CHANNEL(msacm)
+
 /***********************************************************************
  *           acmFormatChooseA (MSACM32.23)
  */
diff --git a/dlls/msacm32/msacm32_main.c b/dlls/msacm32/msacm32_main.c
index 739f3ca..d306545 100644
--- a/dlls/msacm32/msacm32_main.c
+++ b/dlls/msacm32/msacm32_main.c
@@ -12,6 +12,8 @@
 #include "msacmdrv.h"
 #include "winversion.h"
 
+DEFAULT_DEBUG_CHANNEL(msacm)
+
 /**********************************************************************/
 
 static DWORD MSACM_dwProcessesAttached = 0;
diff --git a/dlls/msacm32/stream.c b/dlls/msacm32/stream.c
index 125882f..ec7e848 100644
--- a/dlls/msacm32/stream.c
+++ b/dlls/msacm32/stream.c
@@ -12,6 +12,8 @@
 #include "msacm.h"
 #include "msacmdrv.h"
 
+DEFAULT_DEBUG_CHANNEL(msacm)
+
 /***********************************************************************
  *           acmStreamClose (MSACM32.37)
  */