diff --git a/src/Makefile.am b/src/Makefile.am
index 836199338..32993d866 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -101,5 +101,6 @@ libtorrent_la_LDFLAGS = $(LDFLAGS) -release @VERSION@
 libtorrent_la_LIBADD = @ZLIB@ -l@BOOST_IOSTREAMS_LIB@ -l@BOOST_DATE_TIME_LIB@ -l@BOOST_FILESYSTEM_LIB@ -l@BOOST_THREAD_LIB@ @PTHREAD_LIBS@ @SSL_LIBS@
 
 AM_CXXFLAGS= -ftemplate-depth-50 -I$(top_srcdir)/include -I$(top_srcdir)/include/libtorrent @ZLIBINCL@ @DEBUGFLAGS@ @PTHREAD_CFLAGS@ -DBOOST_MULTI_INDEX_DISABLE_SERIALIZATION @SSL_CXXFLAGS@
+AM_CFLAGS= -I$(top_srcdir)/include -I$(top_srcdir)/include/libtorrent @ZLIBINCL@ @DEBUGFLAGS@ @PTHREAD_CFLAGS@
 AM_LDFLAGS= $(LDFLAGS) -l@BOOST_IOSTREAMS_LIB@ -l@BOOST_DATE_TIME_LIB@ -l@BOOST_FILESYSTEM_LIB@ -l@BOOST_THREAD_LIB@ @PTHREAD_LIBS@ @SSL_LDFLAGS@ @SSL_LIBS@