diff --git a/docs/generate_docs.sh b/docs/generate_docs.sh
index 7b27b3d..1139b9e 100755
--- a/docs/generate_docs.sh
+++ b/docs/generate_docs.sh
@@ -19,6 +19,7 @@
 # and the Lesser GNU General Public License along with this program.
 # If not, see <https://www.gnu.org/licenses/>.
 
+cd "$(dirname "$0")" || exit 1
 ebnf2pdf make "./grammar.ebnf"
 mv grammar.ebnf.pdf ./grammar.pdf