diff --git a/configure.in b/configure.in
index bfce3c1791..a88fa8cff3 100644
--- a/configure.in
+++ b/configure.in
@@ -95,8 +95,8 @@ if test "${enable_optimizer}" = "yes" ; then
 fi
 
 # set defaults for use on all platforms
-SWITCH_AM_CFLAGS="-I${switch_srcdir}/src/include -I${switch_srcdir}/libs/libteletone/src"
-SWITCH_AM_CXXFLAGS="-I${switch_srcdir}/src/include -I${switch_srcdir}/libs/libteletone/src"
+SWITCH_AM_CFLAGS="-I${switch_srcdir}/src/include -I${switch_builddir}/src/include -I${switch_srcdir}/libs/libteletone/src"
+SWITCH_AM_CXXFLAGS="-I${switch_srcdir}/src/include -I${switch_builddir}/src/include -I${switch_srcdir}/libs/libteletone/src"
 SWITCH_AM_LDFLAGS="-lm"
 
 #set SOLINK variable based on compiler and host