diff --git a/docs/source/conf.py b/docs/source/conf.py
index b02826343bf6dca53fdbc84f8ca8450461480b15..0279a9b03e3ae04c106d4608ed95f94171971dec 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -47,7 +47,7 @@ templates_path = ["_templates"]
 exclude_patterns = []
 
 with open("prolog.inc", "r") as file:
-    rst_prolog = file.readlines()
+    rst_prolog = file.read()
 
 # -- Options for HTML output -------------------------------------------------