diff --git a/mitmproxy/addons/streamfile.py b/mitmproxy/addons/streamfile.py
index 624297f2b..183d20366 100644
--- a/mitmproxy/addons/streamfile.py
+++ b/mitmproxy/addons/streamfile.py
@@ -22,12 +22,12 @@ class StreamFile:
 
     def configure(self, options, updated):
         # We're already streaming - stop the previous stream and restart
-        if "filtstr" in updated:
-            if options.filtstr:
-                self.filt = flowfilter.parse(options.filtstr)
+        if "streamfile_filter" in updated:
+            if options.streamfile_filter:
+                self.filt = flowfilter.parse(options.streamfile_filter)
                 if not self.filt:
                     raise exceptions.OptionsError(
-                        "Invalid filter specification: %s" % options.filtstr
+                        "Invalid filter specification: %s" % options.streamfile_filter
                     )
             else:
                 self.filt = None
diff --git a/mitmproxy/options.py b/mitmproxy/options.py
index 31d0b6932..9acdbc29e 100644
--- a/mitmproxy/options.py
+++ b/mitmproxy/options.py
@@ -160,6 +160,10 @@ class Options(optmanager.OptManager):
             "streamfile", Optional[str], None,
             "Write flows to file. Prefix path with + to append."
         )
+        self.add_option(
+            "streamfile_filter", Optional[str], None,
+            "Filter which flows are written to file."
+        )
         self.add_option(
             "server_replay_ignore_content", bool, False,
             "Ignore request's content while searching for a saved flow to replay."
diff --git a/test/mitmproxy/addons/test_streamfile.py b/test/mitmproxy/addons/test_streamfile.py
index 3f78521ce..bcb27c79b 100644
--- a/test/mitmproxy/addons/test_streamfile.py
+++ b/test/mitmproxy/addons/test_streamfile.py
@@ -15,10 +15,12 @@ def test_configure(tmpdir):
         with pytest.raises(exceptions.OptionsError):
             tctx.configure(sa, streamfile=str(tmpdir))
         with pytest.raises(Exception, match="Invalid filter"):
-            tctx.configure(sa, streamfile=str(tmpdir.join("foo")), filtstr="~~")
-        tctx.configure(sa, filtstr="foo")
+            tctx.configure(
+                sa, streamfile=str(tmpdir.join("foo")), streamfile_filter="~~"
+            )
+        tctx.configure(sa, streamfile_filter="foo")
         assert sa.filt
-        tctx.configure(sa, filtstr=None)
+        tctx.configure(sa, streamfile_filter=None)
         assert not sa.filt