diff --git a/prepare_sources.sh b/prepare_sources.sh
index 1871fe2af..aefa8e754 100755
--- a/prepare_sources.sh
+++ b/prepare_sources.sh
@@ -34,8 +34,8 @@ cd $topdir/submodules/mssilk && ./autogen.sh && ./configure --host=arm-linux MED
 
 cd $topdir/submodules/linphone/mediastreamer2/src/
 # extract rules to build shader files
-vs_rule=`cat Makefile.am | grep xxd | grep yuv2rgb.vs`
-fs_rule=`cat Makefile.am | grep xxd | grep yuv2rgb.fs`
+vs_rule=`cat Makefile.am | grep xxd | grep yuv2rgb.vs | sed 's/$$builddir/./'`
+fs_rule=`cat Makefile.am | grep xxd | grep yuv2rgb.fs | sed 's/$$builddir/./'`
 eval $vs_rule
 # verify vs file creation
 if ! [ -e yuv2rgb.vs.h ]
diff --git a/submodules/linphone b/submodules/linphone
index 0a21e2c32..6e0a681c9 160000
--- a/submodules/linphone
+++ b/submodules/linphone
@@ -1 +1 @@
-Subproject commit 0a21e2c322aad67fe75a6f42d6c7dd535946dfff
+Subproject commit 6e0a681c9ebabf88ef55c49b3db79cdf68dd7f76