diff --git a/openair-cn/SCRIPTS/install_asn1c_0.9.24.modified.bash b/openair-cn/SCRIPTS/install_asn1c_0.9.24.modified.bash
index c310aa1899..e8a33ac5d9 100755
--- a/openair-cn/SCRIPTS/install_asn1c_0.9.24.modified.bash
+++ b/openair-cn/SCRIPTS/install_asn1c_0.9.24.modified.bash
@@ -31,11 +31,11 @@
 
 
 rm -Rf /usr/local/src/asn1c-r1516
-svn co https://github.com/vlm/asn1c/trunk  /usr/local/src/asn1c-r1516 -r 1516
+sudo svn co https://github.com/vlm/asn1c/trunk  /usr/local/src/asn1c-r1516 -r 1516
 cd /usr/local/src/asn1c-r1516
-patch -p0 < $OPENAIRCN_DIR/S1AP/MESSAGES/ASN1/asn1cpatch.p0
-./configure
-make
+sudo patch -p0 < $OPENAIRCN_DIR/S1AP/MESSAGES/ASN1/asn1cpatch.p0
+sudo ./configure
+sudo make
 make install
 cd -