diff --git a/doc/container/singularity.rst b/doc/container/singularity.rst
index 30d7e8538d76e3ed66aeb3a97859262a7d105ce4..a1e8c12cb3f41381185e1d467da36f7a31a6464c 100644
--- a/doc/container/singularity.rst
+++ b/doc/container/singularity.rst
@@ -20,7 +20,8 @@ Singularity
 We do not provide a "standalone" Singularity image, but rather bootstrap from a 
 Docker image.
 
-Build the image with:
+Change to the directory containing the Singularity file
+(<PROMOD3_CHECKOUT>/container) and build the image with:
 
 .. code-block:: bash