diff --git a/projects/ROCKNIX/packages/textproc/textviewer/package.mk b/projects/ROCKNIX/packages/textproc/textviewer/package.mk
index 989f5d0f75..b23ad1944b 100644
--- a/projects/ROCKNIX/packages/textproc/textviewer/package.mk
+++ b/projects/ROCKNIX/packages/textproc/textviewer/package.mk
@@ -20,8 +20,8 @@ if [ "${OPENGLES_SUPPORT}" = yes ]; then
   PKG_DEPENDS_TARGET+=" ${OPENGLES}"
 fi
 
-pre_configure_target() {
-  sed -i "s|sdl2-config|${SYSROOT_PREFIX}/usr/bin/sdl2-config|g" Makefile
+post_unpack() {
+  sed -i "s|sdl2-config|${SYSROOT_PREFIX}/usr/bin/sdl2-config|g" ${PKG_BUILD}/Makefile
 }
 
 makeinstall_target(){