diff --git a/ckanext/dcat/configuration_processors.py b/ckanext/dcat/configuration_processors.py
index 10597031..f60b4926 100644
--- a/ckanext/dcat/configuration_processors.py
+++ b/ckanext/dcat/configuration_processors.py
@@ -488,11 +488,7 @@ class FormatFilter(BaseConfigProcessor):
 
     @staticmethod
     def check_config(config_obj):
-        if 'format_filter_include' in config_obj \
-                and 'format_filter_exclude' in config_obj:
-            raise ValueError('Harvest configuration cannot contain both '
-                             'format_filter_include and format_filter_exclude')
-        for key in ['format_filter_include', 'format_filter_exclude']:
+        for key in ['format_filter_exclude', 'format_filter_include']:
             if key in config_obj:
                 formats_list = config_obj[key]
                 if not isinstance(formats_list, list):
@@ -510,11 +506,7 @@ class TagFilter(BaseConfigProcessor):
 
     @staticmethod
     def check_config(config_obj):
-        if 'tag_filter_include' in config_obj \
-                and 'tag_filter_exclude' in config_obj:
-            raise ValueError('Harvest configuration cannot contain both '
-                             'tag_filter_include and tag_filter_exclude')
-        for key in ['tag_filter_include', 'tag_filter_exclude']:
+        for key in ['tag_filter_exclude', 'tag_filter_include']:
             if key in config_obj:
                 tags_list = config_obj[key]
                 if not isinstance(tags_list, list):
diff --git a/ckanext/dcat/harvesters/_json.py b/ckanext/dcat/harvesters/_json.py
index 01151dd1..120f078f 100644
--- a/ckanext/dcat/harvesters/_json.py
+++ b/ckanext/dcat/harvesters/_json.py
@@ -48,17 +48,17 @@ def _get_guids_and_datasets(self, content):
         else:
             raise ValueError('Wrong JSON object')
 
-        # Filter in/out datasets from particular organizations
+        # Filter datasets from particular organizations
         org_filter_include = self.config.get('organizations_filter_include', [])
         org_filter_exclude = self.config.get('organizations_filter_exclude', [])
 
-        # Filter in/out datasets with particular formats
-        format_filter_include = self.config.get('format_filter_include', [])
+        # Filter datasets with particular formats
         format_filter_exclude = self.config.get('format_filter_exclude', [])
+        format_filter_include = self.config.get('format_filter_include', [])
 
-        # Filter in/out datasets with particular tags
-        tag_filter_include = self.config.get('tag_filter_include', [])
+        # Filter datasets with particular tags
         tag_filter_exclude = self.config.get('tag_filter_exclude', [])
+        tag_filter_include = self.config.get('tag_filter_include', [])
 
         for dataset in datasets:
             # Get the organization name for the dataset
@@ -80,27 +80,27 @@ def _get_guids_and_datasets(self, content):
                 if dcat_publisher_name in org_filter_exclude:
                     continue
 
-            # Include/exclude dataset based on particular formats
-            if format_filter_include or format_filter_exclude:
+            # Exclude/include dataset based on particular formats
+            if format_filter_exclude or format_filter_include:
                 resource_formats = [
                     dist.get('format', '').lower()
                     for dist in dataset.get('distribution', [])
                     if dist.get('format')
                 ]
+            if format_filter_exclude:
+                if any(fmt in resource_formats for fmt in format_filter_exclude):
+                    continue
             if format_filter_include:
                 if not any(fmt in resource_formats for fmt in format_filter_include):
                     continue
-            elif format_filter_exclude:
-                if any(fmt in resource_formats for fmt in format_filter_exclude):
-                    continue
 
-            # Include/exclude dataset based on particular tags
+            # Exclude/include dataset based on particular tags
+            if tag_filter_exclude:
+                if any(tag in dataset.get('keyword', []) for tag in tag_filter_exclude):
+                    continue
             if tag_filter_include:
                 if not any(tag in dataset.get('keyword', []) for tag in tag_filter_include):
                     continue
-            elif tag_filter_exclude:
-                if any(tag in dataset.get('keyword', []) for tag in tag_filter_exclude):
-                    continue
 
             as_string = json.dumps(dataset)
 
diff --git a/ckanext/dcat/tests/test_configuration_processors.py b/ckanext/dcat/tests/test_configuration_processors.py
index 1c751621..c7e9fa16 100644
--- a/ckanext/dcat/tests/test_configuration_processors.py
+++ b/ckanext/dcat/tests/test_configuration_processors.py
@@ -935,31 +935,31 @@ class TestFormatFilter:
 
     def test_validation_correct_format(self):
         config = {
-            "format_filter_include": [
-                "CSV",
-                "GeoJSON"
+            "format_filter_exclude": [
+                "PDF"
             ]
         }
         try:
             self.processor.check_config(config)
-            assert config["format_filter_include"] == ["csv", "geojson"]
+            assert config["format_filter_exclude"] == ["pdf"]
         except ValueError:
             assert False
 
         config = {
-            "format_filter_exclude": [
-                "PDF"
+            "format_filter_include": [
+                "CSV",
+                "GeoJSON"
             ]
         }
         try:
             self.processor.check_config(config)
-            assert config["format_filter_exclude"] == ["pdf"]
+            assert config["format_filter_include"] == ["csv", "geojson"]
         except ValueError:
             assert False
 
     def test_validation_wrong_format(self):
         config = {
-            "format_filter_include": "CSV, GeoJSON"
+            "format_filter_exclude": "PDF"
         }
         try:
             self.processor.check_config(config)
@@ -968,7 +968,7 @@ def test_validation_wrong_format(self):
             assert True
 
         config = {
-            "format_filter_exclude": "PDF"
+            "format_filter_include": "CSV, GeoJSON"
         }
         try:
             self.processor.check_config(config)
@@ -983,9 +983,9 @@ class TestTagFilter:
 
     def test_validation_correct_format(self):
         config = {
-            "tag_filter_include": [
-                "Climate",
-                "Water"
+            "tag_filter_exclude": [
+                "Application",
+                "Software"
             ]
         }
         try:
@@ -994,9 +994,9 @@ def test_validation_correct_format(self):
             assert False
 
         config = {
-            "tag_filter_exclude": [
-                "Application",
-                "Software"
+            "tag_filter_include": [
+                "Climate",
+                "Water"
             ]
         }
         try:
@@ -1006,16 +1006,16 @@ def test_validation_correct_format(self):
 
     def test_validation_wrong_format(self):
         config = {
-            "tag_filter_include": "Climate, Water"
+            "tag_filter_exclude": "Application, Software"
         }
         try:
             self.processor.check_config(config)
             assert False
         except ValueError:
             assert True
-        
+
         config = {
-            "tag_filter_exclude": "Application, Software"
+            "tag_filter_include": "Climate, Water"
         }
         try:
             self.processor.check_config(config)