diff --git a/CHANGELOG.md b/CHANGELOG.md
index 203eeb45..1c6cdf10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Added primal_dual_evolution recipe and a plot recipe
 ### Fixed
 ### Changed
+- Allowed writeProblem to print to standard output
 ### Removed
 
 ## 5.2.1 - 2024.10.29
diff --git a/src/pyscipopt/scip.pxi b/src/pyscipopt/scip.pxi
index d2063f5f..2bbcb810 100644
--- a/src/pyscipopt/scip.pxi
+++ b/src/pyscipopt/scip.pxi
@@ -2911,22 +2911,27 @@ cdef class Model:
         user_locale = locale.getlocale(category=locale.LC_NUMERIC)
         locale.setlocale(locale.LC_NUMERIC, "C")
 
-        str_absfile = abspath(filename)
-        absfile = str_conversion(str_absfile)
-        fn, ext = splitext(absfile)
-
-        if len(ext) == 0:
-            ext = str_conversion('.cip')
-        fn = fn + ext
-        ext = ext[1:]
-
-        if trans:
-            PY_SCIP_CALL(SCIPwriteTransProblem(self._scip, fn, ext, genericnames))
+        if filename:
+            str_absfile = abspath(filename)
+            absfile = str_conversion(str_absfile)
+            fn, ext = splitext(absfile)
+            if len(ext) == 0:
+                ext = str_conversion('.cip')
+            fn = fn + ext
+            ext = ext[1:]
+            
+            if trans:
+                PY_SCIP_CALL(SCIPwriteTransProblem(self._scip, fn, ext, genericnames))
+            else:
+                PY_SCIP_CALL(SCIPwriteOrigProblem(self._scip, fn, ext, genericnames))
+            
+            if verbose:
+                print('wrote problem to file ' + str_absfile)
         else:
-            PY_SCIP_CALL(SCIPwriteOrigProblem(self._scip, fn, ext, genericnames))
-        
-        if verbose:
-            print('wrote problem to file ' + str_absfile)
+            if trans:
+                PY_SCIP_CALL(SCIPwriteTransProblem(self._scip, NULL, str_conversion('.cip')[1:], genericnames))
+            else:
+                PY_SCIP_CALL(SCIPwriteOrigProblem(self._scip, NULL, str_conversion('.cip')[1:], genericnames))            
 
         locale.setlocale(locale.LC_NUMERIC,user_locale)
 
diff --git a/tests/test_model.py b/tests/test_model.py
index f5dcd062..41c01756 100644
--- a/tests/test_model.py
+++ b/tests/test_model.py
@@ -67,6 +67,7 @@ def test_model():
 
     s.writeProblem('model')
     s.writeProblem('model.lp')
+    s.writeProblem(filename=False)
 
     s.freeProb()
     s = Model()