diff --git a/gitlab2prov/__init__.py b/gitlab2prov/__init__.py
index 8bb5a35..e78282d 100644
--- a/gitlab2prov/__init__.py
+++ b/gitlab2prov/__init__.py
@@ -3,5 +3,5 @@
 __author__ = "Claas de Boer, Andreas Schreiber"
 __copyright__ = "Copyright 2020, German Aerospace Center (DLR) and individual contributors"
 __license__ = "MIT"
-__version__ = "1.1.2"
+__version__ = "1.1.3"
 __status__ = "Development"
\ No newline at end of file
diff --git a/gitlab2prov/prov/model.py b/gitlab2prov/prov/model.py
index eaeb93b..e050cab 100644
--- a/gitlab2prov/prov/model.py
+++ b/gitlab2prov/prov/model.py
@@ -112,19 +112,24 @@ def modification(
         graph.activity(*commit).wasInformedBy(graph.activity(*parent))
 
     f = graph.entity(*fv.original)
-    prev = graph.entity(*fv.previous)
-    prev.specializationOf(f)
     rev = graph.entity(*fv)
     rev.wasAttributedTo(at)
     rev.specializationOf(f)
-    graph.wasRevisionOf(
-        rev, prev
-    )  # NOTE: rev.wasRevisionOf(prev) is not impl in prov pkg
     rev.wasGeneratedBy(
         c,
         time=c.get_startTime(),
         attributes=[(PROV_ROLE, ProvRole.FILE_REVISION_AFTER_MODIFICATION)],
     )
+
+    # skip previous revisions if none exist
+    if fv.previous is None:
+        return graph
+
+    prev = graph.entity(*fv.previous)
+    prev.specializationOf(f)
+    graph.wasRevisionOf(
+        rev, prev
+    )  # NOTE: rev.wasRevisionOf(prev) is not impl in prov pkg
     c.used(
         prev,
         c.get_startTime(),
diff --git a/setup.cfg b/setup.cfg
index 5dae1a4..71abd8e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = gitlab2prov
-version = 1.1.2
+version = 1.1.3
 license = MIT
 url = https://github.com/DLR-SC/gitlab2prov
 author = Claas de Boer