diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index edfe343a..cbe20019 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -6,6 +6,8 @@ Upcoming Version
 
 **Bug Fixes**
 
+* Remove default highs log file when `log_fn=None` and `io_api="direct"`. This caused `log_file` in
+`solver_options` to be ignored.
 * Fix the parsing of solutions returned by the CBC solver when setting a MIP duality
   gap tolerance.
 * Improve the mapping of termination conditions for the SCIP solver
diff --git a/linopy/solvers.py b/linopy/solvers.py
index 94f4beb8..235dbee3 100644
--- a/linopy/solvers.py
+++ b/linopy/solvers.py
@@ -752,9 +752,6 @@ def solve_problem_from_model(
 
         h = model.to_highspy(explicit_coordinate_names=explicit_coordinate_names)
 
-        if log_fn is None and model is not None:
-            log_fn = model.solver_dir / "highs.log"
-
         return self._solve(
             h,
             solution_fn,