diff --git a/apps/conf_auth/CMakeLists.txt b/apps/conf_auth/CMakeLists.txt
index 81af004a..7812c387 100644
--- a/apps/conf_auth/CMakeLists.txt
+++ b/apps/conf_auth/CMakeLists.txt
@@ -2,4 +2,4 @@ SET(sems_module_name conf_auth)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(conf_auth ivr)
+PYTHON_SOURCES_COMPILE(conf_auth.py ivr)
diff --git a/apps/ivr/CMakeLists.txt b/apps/ivr/CMakeLists.txt
index 4cd1b708..6ddb586e 100644
--- a/apps/ivr/CMakeLists.txt
+++ b/apps/ivr/CMakeLists.txt
@@ -24,4 +24,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/module.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(py/log ivr)
+PYTHON_SOURCES_COMPILE(py/log.py ivr)
diff --git a/apps/mailbox/CMakeLists.txt b/apps/mailbox/CMakeLists.txt
index b8fa8b49..3d9acb74 100644
--- a/apps/mailbox/CMakeLists.txt
+++ b/apps/mailbox/CMakeLists.txt
@@ -19,8 +19,8 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/audio.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(mailbox ivr)
-PYTHON_SOURCES_COMPILE(mailbox_query ivr)
-PYTHON_SOURCES_COMPILE(imap_mailbox/MailboxURL ivr/imap_mailbox)
-PYTHON_SOURCES_COMPILE(imap_mailbox/__init__ ivr/imap_mailbox)
-PYTHON_SOURCES_COMPILE(imap_mailbox/imap4ext ivr/imap_mailbox)
+PYTHON_SOURCES_COMPILE(mailbox.py ivr)
+PYTHON_SOURCES_COMPILE(mailbox_query.py ivr)
+PYTHON_SOURCES_COMPILE(imap_mailbox/MailboxURL.py ivr/imap_mailbox)
+PYTHON_SOURCES_COMPILE(imap_mailbox/__init__.py ivr/imap_mailbox)
+PYTHON_SOURCES_COMPILE(imap_mailbox/imap4ext.py ivr/imap_mailbox)
diff --git a/apps/pin_collect/CMakeLists.txt b/apps/pin_collect/CMakeLists.txt
index 6ec6aa5c..ff2535d0 100644
--- a/apps/pin_collect/CMakeLists.txt
+++ b/apps/pin_collect/CMakeLists.txt
@@ -8,4 +8,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/audio.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(pin_collect ivr)
+PYTHON_SOURCES_COMPILE(pin_collect.py ivr)
diff --git a/apps/py_sems/CMakeLists.txt b/apps/py_sems/CMakeLists.txt
index ca80ef10..91bc2468 100644
--- a/apps/py_sems/CMakeLists.txt
+++ b/apps/py_sems/CMakeLists.txt
@@ -29,4 +29,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/module.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(py/py_sems_log plug-in)
+PYTHON_SOURCES_COMPILE(py/py_sems_log.py plug-in)
diff --git a/apps/twit/CMakeLists.txt b/apps/twit/CMakeLists.txt
index d25cd62b..adf3ddba 100644
--- a/apps/twit/CMakeLists.txt
+++ b/apps/twit/CMakeLists.txt
@@ -11,4 +11,4 @@ INCLUDE(${CMAKE_SOURCE_DIR}/cmake/config.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/audio.rules.txt)
 INCLUDE(${CMAKE_SOURCE_DIR}/cmake/python.rules.txt)
 
-PYTHON_SOURCES_COMPILE(twit ivr)
+PYTHON_SOURCES_COMPILE(twit.py ivr)
diff --git a/cmake/python.rules.txt b/cmake/python.rules.txt
index 3b118050..5cce24b8 100644
--- a/cmake/python.rules.txt
+++ b/cmake/python.rules.txt
@@ -1,7 +1,7 @@
 FUNCTION(PYTHON_SOURCES_COMPILE python_files sems_python_dir)
 	FOREACH (python_file ${python_files})
-		EXECUTE_PROCESS(COMMAND python -c "import py_compile; py_compile.compile('${CMAKE_CURRENT_SOURCE_DIR}/${python_file}.py')")
-		EXECUTE_PROCESS(COMMAND python -O -c "import py_compile; py_compile.compile('${CMAKE_CURRENT_SOURCE_DIR}/${python_file}.py')")
-		INSTALL (FILES ${python_file}.py ${python_file}.pyc ${python_file}.pyo DESTINATION ${SEMS_EXEC_PREFIX}/${SEMS_LIBDIR}/sems/${sems_python_dir})
+		EXECUTE_PROCESS(COMMAND python -c "import py_compile; py_compile.compile('${CMAKE_CURRENT_SOURCE_DIR}/${python_file}')")
+		EXECUTE_PROCESS(COMMAND python -O -c "import py_compile; py_compile.compile('${CMAKE_CURRENT_SOURCE_DIR}/${python_file}')")
+		INSTALL (FILES ${python_file} ${python_file}c ${python_file}o DESTINATION ${SEMS_EXEC_PREFIX}/${SEMS_LIBDIR}/sems/${sems_python_dir})
 	ENDFOREACH()
 ENDFUNCTION()