diff --git a/apps/mailbox/CMakeLists.txt b/apps/mailbox/CMakeLists.txt
index 7fe23e45..13e012f5 100644
--- a/apps/mailbox/CMakeLists.txt
+++ b/apps/mailbox/CMakeLists.txt
@@ -1,4 +1,4 @@
-set (audio_files
+set (mailbox_audio_files
 	and.wav
 	beep.wav
 	bye.wav
@@ -25,3 +25,4 @@ PYTHON_SOURCES_COMPILE(imap_mailbox/__init__.py ivr/imap_mailbox)
 PYTHON_SOURCES_COMPILE(imap_mailbox/imap4ext.py ivr/imap_mailbox)
 
 SEMS_INSTALL_CONFIGS("mailbox;mailbox_query")
+SEMS_INSTALL_AUDIO("${sems_module_name}" "${${sems_module_name}_audio_files}")
diff --git a/apps/pin_collect/CMakeLists.txt b/apps/pin_collect/CMakeLists.txt
index bb6b8ef3..de67f5b4 100644
--- a/apps/pin_collect/CMakeLists.txt
+++ b/apps/pin_collect/CMakeLists.txt
@@ -1,4 +1,4 @@
-set (audio_files
+set (pin_collect_audio_files
 enter_pin.wav
 welcome.wav
 )
@@ -10,3 +10,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
 PYTHON_SOURCES_COMPILE(pin_collect.py ivr)
 SEMS_INSTALL_CONFIGS(pin_collect)
+SEMS_INSTALL_AUDIO("${sems_module_name}" "${${sems_module_name}_audio_files}")
diff --git a/apps/twit/CMakeLists.txt b/apps/twit/CMakeLists.txt
index dd496051..ba0e7b28 100644
--- a/apps/twit/CMakeLists.txt
+++ b/apps/twit/CMakeLists.txt
@@ -1,4 +1,4 @@
-set (audio_files
+set (twit_audio_files
 twit_account_msg.wav
 twit_err_msg.wav
 twit_ok_msg.wav
@@ -13,3 +13,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
 PYTHON_SOURCES_COMPILE(twit.py ivr)
 SEMS_INSTALL_CONFIGS(twit)
+SEMS_INSTALL_AUDIO("${sems_module_name}" "${${sems_module_name}_audio_files}")