diff --git a/jenkins_jobs/loader.py b/jenkins_jobs/loader.py
index 113266ba2..c4ba948a3 100644
--- a/jenkins_jobs/loader.py
+++ b/jenkins_jobs/loader.py
@@ -28,10 +28,13 @@ class Loader(LocLoader):
     def empty(cls, jjb_config):
         return cls(io.StringIO(), jjb_config)
 
-    def __init__(self, stream, jjb_config, source_path=None, anchors=None):
+    def __init__(
+        self, stream, jjb_config, source_path=None, source_dir=None, anchors=None
+    ):
         super().__init__(stream, source_path)
         self.jjb_config = jjb_config
         self.source_path = source_path
+        self.source_dir = source_dir
         self._retain_anchors = jjb_config.yamlparser["retain_anchors"]
         if anchors:
             # Override default set by super class.
@@ -48,17 +51,17 @@ class Loader(LocLoader):
         self.get_event()
         return node
 
-    def _with_stream(self, stream, source_path):
-        return Loader(stream, self.jjb_config, source_path, self.anchors)
+    def _with_stream(self, stream, source_path, source_dir):
+        return Loader(stream, self.jjb_config, source_path, source_dir, self.anchors)
 
     def load_fp(self, fp):
         return self.load(fp)
 
     def load_path(self, path):
-        return self.load(path.read_text(), source_path=path)
+        return self.load(path.read_text(), source_path=path, source_dir=path.parent)
 
-    def load(self, stream, source_path=None):
-        loader = self._with_stream(stream, source_path)
+    def load(self, stream, source_path=None, source_dir=None):
+        loader = self._with_stream(stream, source_path, source_dir)
         try:
             return loader.get_single_data()
         finally:
diff --git a/jenkins_jobs/yaml_objects.py b/jenkins_jobs/yaml_objects.py
index 88c2447f6..5ff2eb968 100644
--- a/jenkins_jobs/yaml_objects.py
+++ b/jenkins_jobs/yaml_objects.py
@@ -201,7 +201,6 @@ Examples:
 """
 
 import abc
-import os.path
 import logging
 import traceback
 import sys
@@ -250,9 +249,9 @@ class BaseYamlObject(metaclass=abc.ABCMeta):
 
     def __init__(self, jjb_config, loader, pos):
         self._search_path = jjb_config.yamlparser["include_path"]
-        if loader.source_path:
+        if loader.source_dir:
             # Loaded from a file, find includes beside it too.
-            self._search_path.append(os.path.dirname(loader.source_path))
+            self._search_path.append(loader.source_dir)
         self._loader = loader
         self._pos = pos
         allow_empty = jjb_config.yamlparser["allow_empty_variables"]
@@ -357,7 +356,9 @@ class J2Yaml(J2Template):
 
     def expand(self, expander, params):
         text = self._render(params)
-        data = self._loader.load(text, source_path="<expanded j2-yaml>")
+        data = self._loader.load(
+            text, source_path="<expanded j2-yaml>", source_dir=self._loader.source_dir
+        )
         try:
             return expander.expand(data, params)
         except JenkinsJobsException as x:
diff --git a/tests/formatter/test_jinja2.py b/tests/formatter/test_jinja2.py
index 35eee0045..408ac9b58 100644
--- a/tests/formatter/test_jinja2.py
+++ b/tests/formatter/test_jinja2.py
@@ -16,6 +16,6 @@ cases = [
 @pytest.mark.parametrize("format,expected_used_params", cases)
 def test_jinja2_required_params(format, expected_used_params):
     config = JJBConfig()
-    loader = Mock(source_path=None)
+    loader = Mock(source_dir=None)
     template = J2String(config, loader, pos=None, template_text=format)
     assert template.required_params == set(expected_used_params)
diff --git a/tests/loader/test_loader.py b/tests/loader/test_loader.py
index cb35fc202..b48160d50 100644
--- a/tests/loader/test_loader.py
+++ b/tests/loader/test_loader.py
@@ -40,6 +40,7 @@ def read_input(scenario, jjb_config):
             scenario.in_path.read_text(),
             jjb_config=jjb_config,
             source_path=scenario.in_path,
+            source_dir=scenario.in_path.parent,
         )
         return loader.get_single_data()
 
diff --git a/tests/yamlparser/error_fixtures/include_missing_path_in_j2_yaml.error b/tests/yamlparser/error_fixtures/include_missing_path_in_j2_yaml.error
index 4367d4c8a..9b3c67bb8 100644
--- a/tests/yamlparser/error_fixtures/include_missing_path_in_j2_yaml.error
+++ b/tests/yamlparser/error_fixtures/include_missing_path_in_j2_yaml.error
@@ -7,6 +7,6 @@ include_missing_path_in_j2_yaml.yaml:3:3: In job template 'sample-job'
 include_missing_path_in_j2_yaml.yaml:5:15: In expanded !j2-yaml:
         builders: !j2-yaml: |
                   ^
-<expanded j2-yaml>:2:5: File missing-file.sh does not exist in any of include directories: .,fixtures-dir,.
+<expanded j2-yaml>:2:5: File missing-file.sh does not exist in any of include directories: .,fixtures-dir,fixtures-dir
         !include: missing-file.sh
         ^