diff --git a/lib/lua/Makefile.am b/lib/lua/Makefile.am
index 364a25d..fe6c936 100644
--- a/lib/lua/Makefile.am
+++ b/lib/lua/Makefile.am
@@ -20,14 +20,14 @@
 SUBDIRS = .
 
 lib_LTLIBRARIES = \
-			libluasocket.la \
-			libluabpack.la \
-			libluabitwise.la \
-			liblualongnumber.la
+            libluasocket.la \
+            libluabpack.la \
+            libluabitwise.la \
+            liblualongnumber.la
 
 libluasocket_la_SOURCES = \
-			src/luasocket.c \
-			src/usocket.c
+            src/luasocket.c \
+            src/usocket.c
 
 nobase_include_HEADERS = src/socket.h
 
@@ -46,18 +46,18 @@
 libluabitwise_la_LDFLAGS = $(AM_LDFLAGS) -llua5.2 -lm
 
 liblualongnumber_la_SOURCES = \
-		src/lualongnumber.c \
-		src/longnumberutils.c
+        src/lualongnumber.c \
+        src/longnumberutils.c
 
 liblualongnumber_la_CPPFLAGS = $(AM_CPPFLAGS) -I/usr/include/lua5.2 -DLUA_COMPAT_MODULE
 liblualongnumber_la_LDFLAGS = $(AM_LDFLAGS) -llua5.2 -lm
 
 EXTRA_DIST = TBinaryProtocol.lua \
-		TBufferedTransport.lua \
-		TFramedTransport.lua \
-		Thrift.lua \
-		TMemoryBuffer.lua \
-		TProtocol.lua \
-		TServer.lua \
-		TSocket.lua \
-		TTransport.lua
\ No newline at end of file
+        TBufferedTransport.lua \
+        TFramedTransport.lua \
+        Thrift.lua \
+        TMemoryBuffer.lua \
+        TProtocol.lua \
+        TServer.lua \
+        TSocket.lua \
+        TTransport.lua
\ No newline at end of file