X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/4002bee0c160c4d8137d5f58b0134a37a66b91b3..baee6f3de09226c3dc41cb2314a0ac348e865561:/docs/admin/Installation.md

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 6b585579..f5411604 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -164,7 +164,9 @@ sudo make install
     are upgrading an older database or want to run the
     [legacy tokenizer](../customize/Tokenizers.md#legacy-tokenizer) for
     some other reason, you need to enable the PostgreSQL module via
-    cmake: `cmake -DBUILD_MODULE=on ../Nominatim`
+    cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
+    you need to have the server development headers for PostgreSQL installed.
+    On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
 
 
 Nominatim installs itself into `/usr/local` per default. To choose a different