diff --git a/build/travis_doxygen.sh b/build/travis_doxygen.sh
index 7b7a7deb..65eed816 100644
--- a/build/travis_doxygen.sh
+++ b/build/travis_doxygen.sh
@@ -12,5 +12,5 @@ git pull
 make
 sudo make install
 
-cd "${TRAVIS_BUILD_DIR}
+cd "${TRAVIS_BUILD_DIR}"
 doxygen build/Doxyfile