diff --git a/mistral/tests/resources/workbook/v2/workbook_schema_test.yaml b/mistral/tests/resources/workbook/v2/workbook_schema_test.yaml
new file mode 100644
index 00000000..1e397324
--- /dev/null
+++ b/mistral/tests/resources/workbook/v2/workbook_schema_test.yaml
@@ -0,0 +1,43 @@
+version: '2.0'
+
+name: workbook_schema_test
+description: >
+  This is a test workbook to verify workbook the schema validation.
+  Specifically we want to test the validation of workflow names.
+  See bug #1645354 for more details.
+
+actions:
+    actionversion:
+        base: std.noop
+
+    versionaction:
+        base: std.noop
+
+    actionversionaction:
+        base: std.noop
+
+workflows:
+
+  workflowversion:
+    description: Workflow name ending with version
+    tasks:
+      task1:
+        action: actionversion
+
+  versionworkflow:
+    description: Workflow name starting with version
+    tasks:
+      task1:
+        action: versionaction
+
+  workflowversionworkflow:
+    description: Workflow name with version in the middle
+    tasks:
+      task1:
+        action: actionversionaction
+
+  version_workflow:
+    description: Workflow name starting with version and an underscore
+    tasks:
+      task1:
+        workflow: workflowversion
diff --git a/mistral/tests/unit/workbook/v2/test_workbook.py b/mistral/tests/unit/workbook/v2/test_workbook.py
index b550869d..a53eea74 100644
--- a/mistral/tests/unit/workbook/v2/test_workbook.py
+++ b/mistral/tests/unit/workbook/v2/test_workbook.py
@@ -14,11 +14,13 @@
 #    limitations under the License.
 
 import copy
+import re
 
 import yaml
 
 from mistral import exceptions as exc
 from mistral.tests.unit.workbook.v2 import base
+from mistral.workbook.v2 import workbook
 
 
 class WorkbookSpecValidation(base.WorkbookSpecValidationTestCase):
@@ -379,3 +381,52 @@ class WorkbookSpecValidation(base.WorkbookSpecValidationTestCase):
         for workflows, expect_error in tests:
             self._parse_dsl_spec(changes=workflows,
                                  expect_error=expect_error)
+
+    def test_workflow_name_validation(self):
+        wb_spec = self._parse_dsl_spec(dsl_file='workbook_schema_test.yaml')
+
+        d = wb_spec.to_dict()
+
+        self.assertEqual('2.0', d['version'])
+        self.assertEqual('2.0', d['workflows']['version'])
+
+        workflow_names = ['workflowversion', 'versionworkflow',
+                          'workflowversionworkflow', 'version_workflow']
+
+        action_names = ['actionversion', 'versionaction',
+                        'actionversionaction']
+
+        for name in workflow_names:
+            self.assertEqual('2.0', d['workflows'][name]['version'])
+            self.assertEqual(name, d['workflows'][name]['name'])
+
+        for name in action_names:
+            self.assertEqual('2.0', d['actions'][name]['version'])
+            self.assertEqual(name, d['actions'][name]['name'])
+
+    def test_name_regex(self):
+
+        # We want to match a string containing version at any point.
+        valid_names = (
+            "workflowversion",
+            "versionworkflow",
+            "workflowversionworkflow",
+            "version_workflow",
+        )
+
+        for valid in valid_names:
+            result = re.match(workbook.NON_VERSION_WORD_REGEX, valid)
+            self.assertNotEqual(None, result,
+                                "Expected match for: {}".format(valid))
+
+        # ... except, we don't want to match a string that isn't just one word
+        # or is exactly "version"
+        invalid_names = (
+            "version",
+            "my workflow",
+        )
+
+        for invalid in invalid_names:
+            result = re.match(workbook.NON_VERSION_WORD_REGEX, invalid)
+            self.assertEqual(None, result,
+                             "Didn't expected match for: {}".format(invalid))
diff --git a/mistral/workbook/v2/workbook.py b/mistral/workbook/v2/workbook.py
index eecc814a..84c5f639 100644
--- a/mistral/workbook/v2/workbook.py
+++ b/mistral/workbook/v2/workbook.py
@@ -17,6 +17,9 @@ from mistral.workbook.v2 import actions as act
 from mistral.workbook.v2 import base
 from mistral.workbook.v2 import workflows as wf
 
+# We want to match any single word that isn't exactly "version"
+NON_VERSION_WORD_REGEX = "^(?!version$)\w+$"
+
 
 class WorkbookSpec(base.BaseSpec):
     # See http://json-schema.org
@@ -33,17 +36,19 @@ class WorkbookSpec(base.BaseSpec):
                 "type": "object",
                 "minProperties": 1,
                 "patternProperties": {
-                    "version": {"enum": ["2.0", 2.0]},
-                    "^(?!version)\w+$": _action_schema
-                }
+                    "^version$": {"enum": ["2.0", 2.0]},
+                    NON_VERSION_WORD_REGEX: _action_schema
+                },
+                "additionalProperties": False
             },
             "workflows": {
                 "type": "object",
                 "minProperties": 1,
                 "patternProperties": {
-                    "version": {"enum": ["2.0", 2.0]},
-                    "^(?!version)\w+$": _workflow_schema
-                }
+                    "^version$": {"enum": ["2.0", 2.0]},
+                    NON_VERSION_WORD_REGEX: _workflow_schema
+                },
+                "additionalProperties": False
             }
         },
         "additionalProperties": False