diff --git a/platform/darwin/src/MGLAttributionInfo.h b/platform/darwin/src/MGLAttributionInfo.h
index 5c9f0909f29..2544989fb79 100644
--- a/platform/darwin/src/MGLAttributionInfo.h
+++ b/platform/darwin/src/MGLAttributionInfo.h
@@ -12,7 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @interface MGLAttributionInfo : NSObject
 
-- (instancetype)initWithTitle:(NSAttributedString *)title URL:(NSURL *)URL;
+- (instancetype)initWithTitle:(NSAttributedString *)title URL:(nullable NSURL *)URL;
 
 @property (nonatomic) NSAttributedString *title;
 @property (nonatomic, nullable) NSURL *URL;
diff --git a/platform/macos/macos.xcodeproj/project.pbxproj b/platform/macos/macos.xcodeproj/project.pbxproj
index deda02b08ce..92d33c74c48 100644
--- a/platform/macos/macos.xcodeproj/project.pbxproj
+++ b/platform/macos/macos.xcodeproj/project.pbxproj
@@ -173,6 +173,8 @@
 		DAED38601D62CED700D7640F /* NSURL+MGLAdditions.m in Sources */ = {isa = PBXBuildFile; fileRef = DAED385E1D62CED700D7640F /* NSURL+MGLAdditions.m */; };
 		DAED38671D62D2EB00D7640F /* amsterdam.geojson in Resources */ = {isa = PBXBuildFile; fileRef = DAED38591D627FF400D7640F /* amsterdam.geojson */; };
 		DAEDC4321D6033F1000224FF /* MGLAttributionInfoTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = DAEDC4311D6033F1000224FF /* MGLAttributionInfoTests.mm */; };
+		DAEDC4351D606247000224FF /* libmbgl-core.a in Frameworks */ = {isa = PBXBuildFile; fileRef = DAE6C3451CC31D1200DB3429 /* libmbgl-core.a */; };
+		DAEDC4371D606291000224FF /* MGLAttributionButtonTests.mm in Sources */ = {isa = PBXBuildFile; fileRef = DAEDC4361D606291000224FF /* MGLAttributionButtonTests.mm */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -397,6 +399,7 @@
 		DAED385D1D62CED700D7640F /* NSURL+MGLAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSURL+MGLAdditions.h"; sourceTree = "<group>"; };
 		DAED385E1D62CED700D7640F /* NSURL+MGLAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "NSURL+MGLAdditions.m"; sourceTree = "<group>"; };
 		DAEDC4311D6033F1000224FF /* MGLAttributionInfoTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = MGLAttributionInfoTests.mm; path = ../../darwin/test/MGLAttributionInfoTests.mm; sourceTree = "<group>"; };
+		DAEDC4361D606291000224FF /* MGLAttributionButtonTests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = MGLAttributionButtonTests.mm; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -738,6 +741,7 @@
 			isa = PBXGroup;
 			children = (
 				DA8F257D1D51C5F40010E6B5 /* Styling */,
+				DAEDC4361D606291000224FF /* MGLAttributionButtonTests.mm */,
 				DAEDC4311D6033F1000224FF /* MGLAttributionInfoTests.mm */,
 				DA35A2C11CCA9F4A00E826B2 /* MGLClockDirectionFormatterTests.m */,
 				DA35A2B51CCA14D700E826B2 /* MGLCompassDirectionFormatterTests.m */,
@@ -1135,6 +1139,7 @@
 				DA35A2C21CCA9F4A00E826B2 /* MGLClockDirectionFormatterTests.m in Sources */,
 				DAE6C3D41CC34C9900DB3429 /* MGLOfflineRegionTests.m in Sources */,
 				DAE6C3D61CC34C9900DB3429 /* MGLStyleTests.mm in Sources */,
+				DAEDC4371D606291000224FF /* MGLAttributionButtonTests.mm in Sources */,
 				DA35A2B61CCA14D700E826B2 /* MGLCompassDirectionFormatterTests.m in Sources */,
 				DAE6C3D21CC34C9900DB3429 /* MGLGeometryTests.mm in Sources */,
 				DAE6C3D51CC34C9900DB3429 /* MGLOfflineStorageTests.m in Sources */,
diff --git a/platform/macos/test/MGLAttributionButtonTests.mm b/platform/macos/test/MGLAttributionButtonTests.mm
new file mode 100644
index 00000000000..f5c0aac8566
--- /dev/null
+++ b/platform/macos/test/MGLAttributionButtonTests.mm
@@ -0,0 +1,31 @@
+#import <Mapbox/Mapbox.h>
+#import <XCTest/XCTest.h>
+
+#import "MGLAttributionButton.h"
+#import "MGLAttributionInfo.h"
+
+@interface MGLAttributionButtonTests : XCTestCase
+
+@end
+
+@implementation MGLAttributionButtonTests
+
+- (void)testPlainSymbol {
+    NSAttributedString *title = [[NSAttributedString alloc] initWithString:@"® & ™ Mapbox" attributes:@{
+        NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),
+    }];
+    MGLAttributionInfo *info = [[MGLAttributionInfo alloc] initWithTitle:title URL:nil];
+    MGLAttributionButton *button = [[MGLAttributionButton alloc] initWithAttributionInfo:info];
+    
+    NSRange symbolUnderlineRange;
+    NSNumber *symbolUnderline = [button.attributedTitle attribute:NSUnderlineStyleAttributeName atIndex:0 effectiveRange:&symbolUnderlineRange];
+    XCTAssertNil(symbolUnderline);
+    XCTAssertEqual(symbolUnderlineRange.length, 6);
+    
+    NSRange wordUnderlineRange;
+    NSNumber *wordUnderline = [button.attributedTitle attribute:NSUnderlineStyleAttributeName atIndex:6 effectiveRange:&wordUnderlineRange];
+    XCTAssertEqualObjects(wordUnderline, @(NSUnderlineStyleSingle));
+    XCTAssertEqual(wordUnderlineRange.length, 6);
+}
+
+@end