diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index eaae4a2..5e59eae 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 2.5.1
+current_version = 2.5.2
 commit = True
 message = [SKIP] version bump {current_version} -> {new_version}
 tag = True
diff --git a/pdbtools/pdb_splitmodel.py b/pdbtools/pdb_splitmodel.py
index 052e3a1..cee1c23 100644
--- a/pdbtools/pdb_splitmodel.py
+++ b/pdbtools/pdb_splitmodel.py
@@ -102,7 +102,7 @@ def run(fhandle, outname=None):
     records = ('ATOM', 'HETATM', 'ANISOU', 'TER')
     for line in fhandle:
         if line.startswith('MODEL'):
-            model_no = line[10:14].strip()
+            model_no = line[10:].strip()
             fh = open(basename + '_' + model_no + '.pdb', 'w')
             model_lines = []
 
diff --git a/setup.py b/setup.py
index 87a1c92..f99a5ab 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 
 setup(
     name="pdb-tools",  # Required
-    version="2.5.1",  # Required
+    version="2.5.2",  # Required
     description="A swiss army knife for PDB files.",  # Optional
     long_description=long_description,  # Optional
     long_description_content_type="text/markdown",  # Optional (see note above)