diff --git a/Sources/PeripheryKit/SourceGraph/Mutators/EncodablePropertyRetainer.swift b/Sources/PeripheryKit/SourceGraph/Mutators/EncodablePropertyRetainer.swift
index c1ead2159..0408b6835 100644
--- a/Sources/PeripheryKit/SourceGraph/Mutators/EncodablePropertyRetainer.swift
+++ b/Sources/PeripheryKit/SourceGraph/Mutators/EncodablePropertyRetainer.swift
@@ -7,12 +7,10 @@ import Shared
 /// assume that all properties are in use, as they may be referenced by synthesized code.
 final class EncodablePropertyRetainer: SourceGraphMutator {
     private let graph: SourceGraph
-    private let configuration: Configuration
     private let externalCodableProtocols: [String]
 
     required init(graph: SourceGraph, configuration: Configuration) {
         self.graph = graph
-        self.configuration = configuration
         self.externalCodableProtocols = configuration.externalEncodableProtocols + configuration.externalCodableProtocols
     }
 
diff --git a/Tests/Fixtures/RetentionFixtures/testRetainsInitializerCalledOnTypeAlias.swift b/Tests/Fixtures/RetentionFixtures/testRetainsInitializerCalledOnTypeAlias.swift
new file mode 100644
index 000000000..d42a60043
--- /dev/null
+++ b/Tests/Fixtures/RetentionFixtures/testRetainsInitializerCalledOnTypeAlias.swift
@@ -0,0 +1,11 @@
+class FixtureClass219 {
+    init(foo: Int) {}
+}
+
+public class FixtureClass219Retainer {
+    typealias FixtureClass219Aliased = FixtureClass219
+
+    public func retain() {
+        _ = Self.FixtureClass219Aliased(foo: 1)
+    }
+}
diff --git a/Tests/PeripheryTests/RetentionTest.swift b/Tests/PeripheryTests/RetentionTest.swift
index 8e9c53abd..9a8fd3d97 100644
--- a/Tests/PeripheryTests/RetentionTest.swift
+++ b/Tests/PeripheryTests/RetentionTest.swift
@@ -1564,4 +1564,15 @@ final class RetentionTest: FixtureSourceGraphTestCase {
             }
         }
     }
+
+    // https://github.com/peripheryapp/periphery/issues/676
+    func testRetainsInitializerCalledOnTypeAlias() {
+        guard performKnownFailures else { return }
+
+        analyze(retainPublic: true) {
+            assertReferenced(.class("FixtureClass219")) {
+                self.assertReferenced(.functionConstructor("init(foo:)"))
+            }
+        }
+    }
 }