diff --git a/include/linkahead/constants.h.in b/include/linkahead/constants.h.in
index 984aba4a751706f5cc493d926d8f27274f130e65..b47ab22213e01da96e0e8d7525591892c65d420d 100644
--- a/include/linkahead/constants.h.in
+++ b/include/linkahead/constants.h.in
@@ -49,7 +49,8 @@ __attribute__((unused)) static const char* LIBLINKAHEAD_CONFIGURATION_FILES_PREC
   "$HOME/linkahead_client.json",
   "$HOME/linkahead-client.json",
   "$HOME/.linkahead_client.json",
-  "$HOME/.linkahead-client.json"
+  "$HOME/.linkahead-client.json",
+  "$CAOSDB_CLIENT_CONFIGURATION",
   "caosdb_client.json",
   "caosdb-client.json",
   ".caosdb_client.json",