diff --git a/aurweb/packages/search.py b/aurweb/packages/search.py
index 37a5b6ff..c0740cda 100644
--- a/aurweb/packages/search.py
+++ b/aurweb/packages/search.py
@@ -269,7 +269,7 @@ class RPCSearch(PackageSearch):
     sanitization done for the PackageSearch `by` argument.
     """
 
-    keys_removed = ("b", "N", "B", "c", "M")
+    keys_removed = ("b", "N", "B", "M")
 
     def __init__(self) -> "RPCSearch":
         super().__init__()
diff --git a/aurweb/rpc.py b/aurweb/rpc.py
index 2a07f6c7..34caf756 100644
--- a/aurweb/rpc.py
+++ b/aurweb/rpc.py
@@ -89,6 +89,7 @@ class RPC:
         "groups",
         "submitter",
         "keywords",
+        "comaintainers",
     }
 
     # A mapping of by aliases.
@@ -98,6 +99,7 @@ class RPC:
         "maintainer": "m",
         "submitter": "s",
         "keywords": "k",
+        "comaintainers": "c",
     }
 
     def __init__(self, version: int = 0, type: str = None) -> "RPC":
diff --git a/test/test_rpc.py b/test/test_rpc.py
index 9c3ca883..4768a2da 100644
--- a/test/test_rpc.py
+++ b/test/test_rpc.py
@@ -17,6 +17,7 @@ from aurweb.models.group import Group
 from aurweb.models.license import License
 from aurweb.models.package import Package
 from aurweb.models.package_base import PackageBase
+from aurweb.models.package_comaintainer import PackageComaintainer
 from aurweb.models.package_dependency import PackageDependency
 from aurweb.models.package_group import PackageGroup
 from aurweb.models.package_keyword import PackageKeyword
@@ -149,7 +150,7 @@ def packages(user: User, user2: User, user3: User) -> list[Package]:
         output.append(pkg)
 
     # Setup a few more related records on the first package:
-    # a license, group, some keywords and some votes.
+    # a license, group, some keywords, comaintainer and some votes.
     with db.begin():
         lic = db.create(License, Name="GPL")
         db.create(PackageLicense, Package=output[0], License=lic)
@@ -157,6 +158,13 @@ def packages(user: User, user2: User, user3: User) -> list[Package]:
         grp = db.create(Group, Name="testgroup")
         db.create(PackageGroup, Package=output[0], Group=grp)
 
+        db.create(
+            PackageComaintainer,
+            PackageBase=output[0].PackageBase,
+            User=user2,
+            Priority=1,
+        )
+
         for keyword in ["big-chungus", "smol-chungus", "sizeable-chungus"]:
             db.create(
                 PackageKeyword, PackageBase=output[0].PackageBase, Keyword=keyword
@@ -957,6 +965,27 @@ def test_rpc_search_keywords(client: TestClient, packages: list[Package]):
     assert data.get("resultcount") == 0
 
 
+def test_rpc_search_comaintainers(
+    client: TestClient, user2: User, packages: list[Package]
+):
+    params = {"v": 5, "type": "search", "by": "comaintainers", "arg": user2.Username}
+    with client as request:
+        response = request.get("/rpc", params=params)
+    data = response.json()
+
+    # should get 1 package
+    assert data.get("resultcount") == 1
+    names = list(sorted(r.get("Name") for r in data.get("results")))
+    expected_results = ["big-chungus"]
+    assert names == expected_results
+
+    # non-existent search
+    params["arg"] = "blah-blah"
+    response = request.get("/rpc", params=params)
+    data = response.json()
+    assert data.get("resultcount") == 0
+
+
 def test_rpc_incorrect_by(client: TestClient):
     params = {"v": 5, "type": "search", "by": "fake", "arg": "big"}
     with client as request: