diff --git a/scripts/build.sh b/scripts/build.sh
index 1fb3e11..1d0b27e 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -426,8 +426,7 @@ sudo ldconfig
 # build ffmpeg
 cd "$FFMPEG_DIR/" || exit
 update_git
-export PKG_CONFIG_PATH+="/usr/local/lib/pkgconfig/"
-export LD_PRELOAD="$(ls /usr/local/lib/*.so | tr '\n' ':')$LD_PRELOAD"
+export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH"
 make clean
 ./configure --enable-libsvtav1  \
      --enable-libdav1d --enable-libopus \