diff --git a/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinFixups.cs b/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinFixups.cs
index 95eb8c871..542dc8404 100644
--- a/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinFixups.cs
+++ b/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinFixups.cs
@@ -93,6 +93,12 @@ static void FixupJavaMethods (Methods methods)
 				method.AccessFlags = MethodAccessFlags.Private;
 			}
 
+			// Hide constructor if it's the synthetic DefaultConstructorMarker one
+			foreach (var method in methods.Where (method => method.IsDefaultConstructorMarker ())) {
+				Log.Debug ($"Kotlin: Hiding synthetic default constructor in class '{method.DeclaringType?.ThisClass.Name.Value}' with signature '{method.Descriptor}'");
+				method.AccessFlags = ((method.AccessFlags ^ MethodAccessFlags.Public) & method.AccessFlags) | MethodAccessFlags.Private;
+			}
+
 			// Better parameter names in extension methods
 			foreach (var method in methods.Where (m => m.IsPubliclyVisible && m.AccessFlags.HasFlag (MethodAccessFlags.Static)))
 				FixupExtensionMethod (method);
diff --git a/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinUtilities.cs b/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinUtilities.cs
index fd9e692f7..0a8f03f37 100644
--- a/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinUtilities.cs
+++ b/src/Xamarin.Android.Tools.Bytecode/Kotlin/KotlinUtilities.cs
@@ -72,6 +72,26 @@ public static string GetMethodNameWithoutSuffix (this MethodInfo method)
 			return index >= 0 ? method.Name.Substring (0, index) : method.Name;
 		}
 
+		public static bool IsDefaultConstructorMarker (this MethodInfo method)
+		{
+			// A default constructor is synthetic and always has an int and a
+			// DefaultConstructorMarker as its final 2 parameters.
+			if (method.Name != "<init>")
+				return false;
+
+			if (!method.AccessFlags.HasFlag (MethodAccessFlags.Synthetic))
+				return false;
+
+			var parameters = method.GetParameters ();
+
+			if (parameters.Length < 2)
+				return false;
+
+			// Parameter list ends with `int, DefaultConstructorMarker`.
+			return parameters [parameters.Length - 2].Type.TypeSignature == "I" &&
+				parameters [parameters.Length - 1].Type.TypeSignature == "Lkotlin/jvm/internal/DefaultConstructorMarker;";
+		}
+
 		public static bool IsPubliclyVisible (this ClassAccessFlags flags) => flags.HasFlag (ClassAccessFlags.Public) || flags.HasFlag (ClassAccessFlags.Protected);
 
 		public static bool IsPubliclyVisible (this KotlinClassVisibility flags) => flags == KotlinClassVisibility.Public || flags == KotlinClassVisibility.Protected;
diff --git a/tests/Xamarin.Android.Tools.Bytecode-Tests/KotlinFixupsTests.cs b/tests/Xamarin.Android.Tools.Bytecode-Tests/KotlinFixupsTests.cs
index ddaf5c9e6..fed16412d 100644
--- a/tests/Xamarin.Android.Tools.Bytecode-Tests/KotlinFixupsTests.cs
+++ b/tests/Xamarin.Android.Tools.Bytecode-Tests/KotlinFixupsTests.cs
@@ -51,6 +51,32 @@ public void HideInternalConstructor ()
 			Assert.False (ctor.AccessFlags.HasFlag (MethodAccessFlags.Public));
 		}
 
+		[Test]
+		public void HideDefaultConstructorMarker ()
+		{
+			var klass = LoadClassFile ("DefaultConstructor.class");
+
+			// init ()
+			var ctor_0p = klass.Methods.Single (m => m.Name == "<init>" && m.GetParameters ().Length == 0);
+
+			// init (string name)
+			var ctor_1p = klass.Methods.Single (m => m.Name == "<init>" && m.GetParameters ().Length == 1);
+
+			// init (string p0, int p1, DefaultConstructorMarker p2)
+			var ctor_3p = klass.Methods.Single (m => m.Name == "<init>" && m.GetParameters ().Length == 3);
+
+			Assert.True (ctor_3p.AccessFlags.HasFlag (MethodAccessFlags.Public));
+
+			KotlinFixups.Fixup (new [] { klass });
+
+			// Assert that the normal constructors are still public
+			Assert.True (ctor_0p.AccessFlags.HasFlag (MethodAccessFlags.Public));
+			Assert.True (ctor_1p.AccessFlags.HasFlag (MethodAccessFlags.Public));
+
+			// Assert that the synthetic "DefaultConstructorMarker" constructor has been marked private
+			Assert.False (ctor_3p.AccessFlags.HasFlag (MethodAccessFlags.Public));
+		}
+
 		[Test]
 		public void HideImplementationMethod ()
 		{
diff --git a/tests/Xamarin.Android.Tools.Bytecode-Tests/Resources/JvmOverloadsConstructor.xml b/tests/Xamarin.Android.Tools.Bytecode-Tests/Resources/JvmOverloadsConstructor.xml
index 3cf7ae7e2..91dfbc19a 100644
--- a/tests/Xamarin.Android.Tools.Bytecode-Tests/Resources/JvmOverloadsConstructor.xml
+++ b/tests/Xamarin.Android.Tools.Bytecode-Tests/Resources/JvmOverloadsConstructor.xml
@@ -75,44 +75,6 @@
           type="boolean"
           jni-type="Z" />
       </constructor>
-      <constructor
-        deprecated="not deprecated"
-        final="false"
-        name="JvmOverloadsConstructor"
-        static="false"
-        visibility="public"
-        bridge="false"
-        synthetic="true"
-        jni-signature="(LJvmOverloadsConstructor;IILjava/lang/String;ZILkotlin/jvm/internal/DefaultConstructorMarker;)V">
-        <parameter
-          name="p0"
-          type="JvmOverloadsConstructor"
-          jni-type="LJvmOverloadsConstructor;" />
-        <parameter
-          name="p1"
-          type="int"
-          jni-type="I" />
-        <parameter
-          name="p2"
-          type="int"
-          jni-type="I" />
-        <parameter
-          name="p3"
-          type="java.lang.String"
-          jni-type="Ljava/lang/String;" />
-        <parameter
-          name="p4"
-          type="boolean"
-          jni-type="Z" />
-        <parameter
-          name="p5"
-          type="int"
-          jni-type="I" />
-        <parameter
-          name="p6"
-          type="kotlin.jvm.internal.DefaultConstructorMarker"
-          jni-type="Lkotlin/jvm/internal/DefaultConstructorMarker;" />
-      </constructor>
       <constructor
         deprecated="not deprecated"
         final="false"
diff --git a/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.class b/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.class
new file mode 100644
index 000000000..491cd1975
Binary files /dev/null and b/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.class differ
diff --git a/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.kt b/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.kt
new file mode 100644
index 000000000..ce8653b26
--- /dev/null
+++ b/tests/Xamarin.Android.Tools.Bytecode-Tests/kotlin/DefaultConstructor.kt
@@ -0,0 +1,2 @@
+class DefaultConstructor (name: String = "bob") {
+}