diff --git a/openpype/lib/delivery.py b/openpype/lib/delivery.py
index 78d743003b..03abe5802c 100644
--- a/openpype/lib/delivery.py
+++ b/openpype/lib/delivery.py
@@ -4,7 +4,6 @@ import shutil
 import glob
 import clique
 import collections
-import re
 
 
 def collect_frames(files):
@@ -14,31 +13,24 @@ def collect_frames(files):
         Uses clique as most precise solution, used when anatomy template that
         created files is not known.
 
-        Depends that version substring starts with 'v' with any number of
-        numeric characters after.
+        Assumption is that frames are separated by '.', negative frames are not
+        allowed.
 
         Args:
             files(list) or (set with single value): list of source paths
         Returns:
             (dict): {'/asset/subset_v001.0001.png': '0001', ....}
     """
-    collections, remainder = clique.assemble(files, minimum_items=1)
+    patterns = [clique.PATTERNS["frames"]]
+    collections, remainder = clique.assemble(files, minimum_items=1,
+                                             patterns=patterns)
 
-    real_file_name = None
     sources_and_frames = {}
-    if len(files) == 1:
-        real_file_name = list(files)[0]
-        sources_and_frames[real_file_name] = None
-
     if collections:
         for collection in collections:
             src_head = collection.head
             src_tail = collection.tail
 
-            # version recognized as a collection
-            if re.match(".*([a-zA-Z0-9]%[0-9]+d).*", collection.format()):
-                continue
-
             for index in collection.indexes:
                 src_frame = collection.format("{padding}") % index
                 src_file_name = "{}{}{}".format(src_head, src_frame,
diff --git a/tests/unit/openpype/lib/test_delivery.py b/tests/unit/openpype/lib/test_delivery.py
index 871ea95df7..04a71655e3 100644
--- a/tests/unit/openpype/lib/test_delivery.py
+++ b/tests/unit/openpype/lib/test_delivery.py
@@ -47,6 +47,18 @@ def test_collect_frames_single_sequence():
     assert ret == expected, "Not matching"
 
 
+def test_collect_frames_single_sequence_negative():
+    files = ["Asset_renderCompositingMain_v001.-0000.png"]
+    ret = collect_frames(files)
+
+    expected = {
+        "Asset_renderCompositingMain_v001.-0000.png": None
+    }
+
+    print(ret)
+    assert ret == expected, "Not matching"
+
+
 def test_collect_frames_single_sequence_shot():
     files = ["testing_sh010_workfileCompositing_v001.aep"]
     ret = collect_frames(files)
@@ -59,12 +71,24 @@ def test_collect_frames_single_sequence_shot():
     assert ret == expected, "Not matching"
 
 
+def test_collect_frames_single_sequence_numbers():
+    files = ["PRJ_204_430_0005_renderLayoutMain_v001.0001.exr"]
+    ret = collect_frames(files)
+
+    expected = {
+        "PRJ_204_430_0005_renderLayoutMain_v001.0001.exr": "0001"
+    }
+
+    print(ret)
+    assert ret == expected, "Not matching"
+
+
 def test_collect_frames_single_sequence_shot_with_frame():
     files = ["testing_sh010_workfileCompositing_000_v001.aep"]
     ret = collect_frames(files)
 
     expected = {
-        "testing_sh010_workfileCompositing_000_v001.aep": "000"
+        "testing_sh010_workfileCompositing_000_v001.aep": None
     }
 
     print(ret)
@@ -88,7 +112,7 @@ def test_collect_frames_single_sequence_different_format():
     ret = collect_frames(files)
 
     expected = {
-        "Asset.v001.renderCompositingMain_0000.png": "0000"
+        "Asset.v001.renderCompositingMain_0000.png": None
     }
 
     print(ret)
@@ -100,7 +124,7 @@ def test_collect_frames_single_sequence_withhout_version():
     ret = collect_frames(files)
 
     expected = {
-        "pngv001.renderCompositingMain_0000.png": "0000"
+        "pngv001.renderCompositingMain_0000.png": None
     }
 
     print(ret)