diff --git a/BeefLibs/Beefy2D/src/geom/Quaternion.bf b/BeefLibs/Beefy2D/src/geom/Quaternion.bf
index 48f3208d..298f1d9e 100644
--- a/BeefLibs/Beefy2D/src/geom/Quaternion.bf
+++ b/BeefLibs/Beefy2D/src/geom/Quaternion.bf
@@ -10,7 +10,12 @@ namespace Beefy.geom
         public float mZ;
         public float mW;
         public static readonly Quaternion Identity = Quaternion(0, 0, 0, 1);
-        
+
+		public this()
+		{
+			this = default;
+		}
+
         public this(float x, float y, float z, float w)
         {
             mX = x;
diff --git a/BeefLibs/corlib/src/Globalization/CultureInfo.bf b/BeefLibs/corlib/src/Globalization/CultureInfo.bf
index 4fa98af0..95ca0721 100644
--- a/BeefLibs/corlib/src/Globalization/CultureInfo.bf
+++ b/BeefLibs/corlib/src/Globalization/CultureInfo.bf
@@ -226,6 +226,11 @@ namespace System.Globalization
 		    return (temp);
 		}
 
+		private this()
+		{
+
+		}
+
 		public this(String name) : this(name, true)
 		{
 		}
diff --git a/BeefLibs/corlib/src/Threading/Thread.bf b/BeefLibs/corlib/src/Threading/Thread.bf
index b2090c0d..d7de4ad9 100644
--- a/BeefLibs/corlib/src/Threading/Thread.bf
+++ b/BeefLibs/corlib/src/Threading/Thread.bf
@@ -93,6 +93,11 @@ namespace System.Threading
             }
         }
 
+		private this()
+		{
+
+		}
+
         public this(ThreadStart start)
         {
             if (start == null)