diff --git a/documentation/python_installation.rst b/documentation/python_installation.rst
index 6cc3402e61..dee9bfd4fc 100644
--- a/documentation/python_installation.rst
+++ b/documentation/python_installation.rst
@@ -79,6 +79,13 @@ Install the AMICI dependencies via ``pacman``
 
    sudo pacman -S python swig openblas gcc hdf5 boost-libs
 
+Export the bash variables ``BLAS_CFLAGS`` and ``BLAS_LIBS`` to point to where BLAS was installed, e.g.:
+
+.. code-block:: bash
+
+  export BLAS_CFLAGS="-I/usr/include/openblas/"
+  export BLAS_LIBS="-lopenblas"
+
 Install AMICI:
 
 .. code-block:: bash
@@ -99,7 +106,14 @@ Alternatively:
 
    sudo pacman -Su python swig openblas gcc hdf5 boost-libs
 
-3. Install AMICI:
+3. Export the bash variables ``BLAS_CFLAGS`` and ``BLAS_LIBS`` to point to where BLAS was installed, e.g.:
+
+.. code-block:: bash
+
+  export BLAS_CFLAGS="-I/usr/include/openblas/"
+  export BLAS_LIBS="-lopenblas"
+
+4. Install AMICI:
 
 .. code-block:: bash