diff --git a/Sources/SWBCore/Dependencies.swift b/Sources/SWBCore/Dependencies.swift
index 7fa0328e..0429c616 100644
--- a/Sources/SWBCore/Dependencies.swift
+++ b/Sources/SWBCore/Dependencies.swift
@@ -105,17 +105,17 @@ public struct ModuleDependenciesContext: Sendable, SerializableCodable {
 
         let moduleDependencyNames = moduleDependencies.map { $0.name }
         let fileNames = files.compactMap { findFrameworkName($0) }
-        let missingDeps = fileNames.filter {
+        let missingDeps = Set(fileNames.filter {
             return !moduleDependencyNames.contains($0)
         }.map {
             ModuleDependency(name: $0, accessLevel: .Private)
-        }
+        })
 
         guard !missingDeps.isEmpty else { return [] }
 
         let behavior: Diagnostic.Behavior = validate == .yesError ? .error : .warning
 
-        let fixIt = fixItContext?.makeFixIt(newModules: missingDeps)
+        let fixIt = fixItContext?.makeFixIt(newModules: Array(missingDeps))
         let fixIts = fixIt.map { [$0] } ?? []
 
         let message = "Missing entries in \(BuiltinMacros.MODULE_DEPENDENCIES.name): \(missingDeps.map { $0.asBuildSettingEntryQuotedIfNeeded }.sorted().joined(separator: " "))"
diff --git a/Tests/SWBBuildSystemTests/DependencyValidationTests.swift b/Tests/SWBBuildSystemTests/DependencyValidationTests.swift
index 21483f31..85204c76 100644
--- a/Tests/SWBBuildSystemTests/DependencyValidationTests.swift
+++ b/Tests/SWBBuildSystemTests/DependencyValidationTests.swift
@@ -481,7 +481,7 @@ fileprivate struct DependencyValidationTests: CoreBasedTests {
                                     "CLANG_ENABLE_MODULES": "YES",
                                     "CLANG_ENABLE_EXPLICIT_MODULES": "YES",
                                     "GENERATE_INFOPLIST_FILE": "YES",
-                                    "MODULE_DEPENDENCIES": "Foundation",
+                                    "MODULE_DEPENDENCIES": "Accelerate",
                                     "VALIDATE_MODULE_DEPENDENCIES": "YES_ERROR",
                                     "SDKROOT": "$(HOST_PLATFORM)",
                                     "SUPPORTED_PLATFORMS": "$(HOST_PLATFORM)",
@@ -507,6 +507,7 @@ fileprivate struct DependencyValidationTests: CoreBasedTests {
             try await tester.fs.writeFileContents(SRCROOT.join("Sources/CoreFoo.m")) { contents in
                 contents <<< """
                     #include <Foundation/Foundation.h>
+                    #include <Foundation/NSObject.h>
                     #include <Accelerate/Accelerate.h>
 
                     void f0(void) { };
@@ -515,7 +516,7 @@ fileprivate struct DependencyValidationTests: CoreBasedTests {
 
             // Expect complaint about undeclared dependency
             try await tester.checkBuild(parameters: BuildParameters(configuration: "Debug"), runDestination: .host, persistent: true) { results in
-                results.checkError(.contains("Missing entries in MODULE_DEPENDENCIES: Accelerate"))
+                results.checkError(.contains("Missing entries in MODULE_DEPENDENCIES: Foundation (for task"))
             }
 
             // Declaring dependencies resolves the problem