diff --git a/api/catalog/api/controllers/search_controller.py b/api/catalog/api/controllers/search_controller.py
index e96585aee..626eb7c0a 100644
--- a/api/catalog/api/controllers/search_controller.py
+++ b/api/catalog/api/controllers/search_controller.py
@@ -239,7 +239,8 @@ def search(
     # names are identical.
     filters = [
         ("extension", None),
-        ("categories", None),
+        ("category", None),
+        ("categories", "category"),
         ("aspect_ratio", None),
         ("size", None),
         ("source", None),
diff --git a/api/catalog/api/serializers/audio_serializers.py b/api/catalog/api/serializers/audio_serializers.py
index e1a6eea00..fcc5b60d1 100644
--- a/api/catalog/api/serializers/audio_serializers.py
+++ b/api/catalog/api/serializers/audio_serializers.py
@@ -52,7 +52,7 @@ class AudioSearchRequestSerializer(
     fields_names = [
         *MediaSearchRequestSerializer.fields_names,
         *AudioSearchRequestSourceSerializer.field_names,
-        "categories",
+        "category",
         "duration",
     ]
     """
@@ -60,8 +60,8 @@ class AudioSearchRequestSerializer(
     used to generate Swagger documentation.
     """
 
-    categories = serializers.CharField(
-        label="categories",
+    category = serializers.CharField(
+        label="category",
         help_text="A comma separated list of categories; available categories "
         "include `music`, `sound_effect`, `podcast`, `audiobook`, "
         "and `news`.",
diff --git a/api/catalog/api/serializers/image_serializers.py b/api/catalog/api/serializers/image_serializers.py
index 3def2a669..17dee58db 100644
--- a/api/catalog/api/serializers/image_serializers.py
+++ b/api/catalog/api/serializers/image_serializers.py
@@ -26,7 +26,7 @@ class ImageSearchRequestSerializer(
     fields_names = [
         *MediaSearchRequestSerializer.fields_names,
         *ImageSearchRequestSourceSerializer.field_names,
-        "categories",
+        "category",
         "aspect_ratio",
         "size",
     ]
@@ -36,8 +36,8 @@ class ImageSearchRequestSerializer(
     """
 
     # Ref: ingestion_server/ingestion_server/categorize.py#Category
-    categories = serializers.CharField(
-        label="categories",
+    category = serializers.CharField(
+        label="category",
         help_text="A comma separated list of categories; available categories "
         "include `illustration`, `photograph`, and "
         "`digitized_artwork`.",
diff --git a/api/test/audio_integration_test.py b/api/test/audio_integration_test.py
index 72bf5f05c..f545cdb62 100644
--- a/api/test/audio_integration_test.py
+++ b/api/test/audio_integration_test.py
@@ -10,6 +10,7 @@
     report,
     search,
     search_all_excluded,
+    search_by_category,
     search_consistency,
     search_quotes,
     search_source_and_excluded,
@@ -34,6 +35,11 @@ def test_search(audio_fixture):
     search(audio_fixture)
 
 
+def test_search_category_filtering(audio_fixture):
+    search_by_category("audio", "music", audio_fixture)
+    search_by_category("audio", "pronunciation", audio_fixture)
+
+
 def test_search_all_excluded():
     search_all_excluded("audio", ["jamendo", "wikimedia_audio"])
 
diff --git a/api/test/media_integration.py b/api/test/media_integration.py
index 51b858e11..9bc1c3409 100644
--- a/api/test/media_integration.py
+++ b/api/test/media_integration.py
@@ -14,6 +14,16 @@ def search(fixture):
     assert fixture["result_count"] > 0
 
 
+def search_by_category(media_path, category, fixture):
+    response = requests.get(f"{API_URL}/v1/{media_path}?category={category}")
+    assert response.status_code == 200
+    data = json.loads(response.text)
+    assert data["result_count"] < fixture["result_count"]
+    results = data["results"]
+    # Make sure each result is from the specified category
+    assert all(audio_item["category"] == category for audio_item in results)
+
+
 def search_all_excluded(media_path, excluded_source):
     response = requests.get(
         f"{API_URL}/v1/{media_path}?q=test&excluded_source={','.join(excluded_source)}"