diff --git a/Source/SwiftLintFramework/Rules/XCTSpecificMatcherRule.swift b/Source/SwiftLintFramework/Rules/XCTSpecificMatcherRule.swift
index c0168830d..febe74a8f 100644
--- a/Source/SwiftLintFramework/Rules/XCTSpecificMatcherRule.swift
+++ b/Source/SwiftLintFramework/Rules/XCTSpecificMatcherRule.swift
@@ -50,7 +50,7 @@ public struct XCTSpecificMatcherRule: ASTRule, OptInRule, ConfigurationProviderR
                     let body = file.contents.bridge().substringWithByteRange(start: paramOffset, length: paramLength)
                     else { return nil }
 
-                return ["false", "true", "nil"].contains(body) ? body : nil
+                return protectedArguments.contains(body) ? body : nil
             }
 
         // If the call has "protected" words, provides suggestion based on the first one.
@@ -65,6 +65,10 @@ public struct XCTSpecificMatcherRule: ASTRule, OptInRule, ConfigurationProviderR
                            reason: "Prefer the specific matcher '\(reason)' instead.")
         ]
     }
+
+    private let protectedArguments: Set<String> = [
+        "false", "true", "nil"
+    ]
 }
 
 private enum XCTestMatcher: String {
diff --git a/Tests/LinuxMain.swift b/Tests/LinuxMain.swift
index 0ce5f208f..5e3dd2ab6 100644
--- a/Tests/LinuxMain.swift
+++ b/Tests/LinuxMain.swift
@@ -1333,6 +1333,20 @@ extension WeakDelegateRuleTests {
 extension XCTFailMessageRuleTests {
     static var allTests: [(String, (XCTFailMessageRuleTests) -> () throws -> Void)] = [
         ("testWithDefaultConfiguration", testWithDefaultConfiguration)
+}
+
+extension XCTSpecificMatcherRuleTests {
+    static var allTests: [(String, (XCTSpecificMatcherRuleTests) -> () throws -> Void)] = [
+        ("testRule", testRule),
+        ("testEqualTrue", testEqualTrue),
+        ("testEqualFalse", testEqualFalse),
+        ("testEqualNil", testEqualNil),
+        ("testNotEqualTrue", testNotEqualTrue),
+        ("testNotEqualFalse", testNotEqualFalse),
+        ("testNotEqualNil", testNotEqualNil),
+        ("testEqualNilNil", testEqualNilNil),
+        ("testEqualTrueTrue", testEqualTrueTrue),
+        ("testEqualFalseFalse", testEqualFalseFalse)
     ]
 }
 
diff --git a/Tests/SwiftLintFrameworkTests/XCTSpecificMatcherRuleTests.swift b/Tests/SwiftLintFrameworkTests/XCTSpecificMatcherRuleTests.swift
index 7253081bc..dd3e4402e 100644
--- a/Tests/SwiftLintFrameworkTests/XCTSpecificMatcherRuleTests.swift
+++ b/Tests/SwiftLintFrameworkTests/XCTSpecificMatcherRuleTests.swift
@@ -15,6 +15,50 @@ class XCTSpecificMatcherRuleTests: XCTestCase {
         verifyRule(XCTSpecificMatcherRule.description)
     }
 
+    // MARK: - Reasons
+
+    func testEqualTrue() {
+        let string = "XCTAssertEqual(a, true)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertTrue' instead.")
+    }
+
+    func testEqualFalse() {
+        let string = "XCTAssertEqual(a, false)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertFalse' instead.")
+    }
+
+    func testEqualNil() {
+        let string = "XCTAssertEqual(a, nil)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertNil' instead.")
+    }
+
+    func testNotEqualTrue() {
+        let string = "XCTAssertNotEqual(a, true)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertFalse' instead.")
+    }
+
+    func testNotEqualFalse() {
+        let string = "XCTAssertNotEqual(a, false)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertTrue' instead.")
+    }
+
+    func testNotEqualNil() {
+        let string = "XCTAssertNotEqual(a, nil)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertNotNil' instead.")
+    }
+
     // MARK: - Additional Tests
 
     func testEqualNilNil() {
@@ -38,6 +82,27 @@ class XCTSpecificMatcherRuleTests: XCTestCase {
         XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertFalse' instead.")
     }
 
+    func testNotEqualNilNil() {
+        let string = "XCTAssertNotEqual(nil, nil)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertNotNil' instead.")
+    }
+
+    func testNotEqualTrueTrue() {
+        let string = "XCTAssertNotEqual(true, true)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertFalse' instead.")
+    }
+
+    func testNotEqualFalseFalse() {
+        let string = "XCTAssertNotEqual(false, false)"
+        let violations = self.violations(string)
+        XCTAssertEqual(violations.count, 1)
+        XCTAssertEqual(violations.first!.reason, "Prefer the specific matcher 'XCTAssertTrue' instead.")
+    }
+
     private func violations(_ string: String) -> [StyleViolation] {
         let config = makeConfig(nil, XCTSpecificMatcherRule.description.identifier)!
         return SwiftLintFrameworkTests.violations(string, config: config)