diff --git a/math.d b/math.d
index 94aaf9b..d6ba348 100644
--- a/math.d
+++ b/math.d
@@ -41,7 +41,7 @@ struct Vector(T, int N)
 
 	union
 	{
-		T[N] v;
+		T[N] v = 0;
 		struct
 		{
 			T x;
@@ -389,7 +389,7 @@ align(16) struct Matrix(T, int D)
 
 	union
 	{
-		T[N] v;
+		T[N] v = 0;
 		Row[D] rows;
 		MatrixVec[D] vec;
 		static if (D == 4) mat4 glm_mat;
@@ -532,7 +532,7 @@ struct Quat
 {
 	union
 	{
-		f32[4] v;
+		f32[4] v = 0;
 		Vec4 vec;
 		struct
 		{
@@ -1120,9 +1120,16 @@ unittest
 	}
 	*/
 
-	{ // Vectors
+	{ // Initializers
 		u32[4] arr = [1, 2, 3, 4];
 		Vec4 vec = Vec4(arr);
 		assert(vec == Vec4(1.0, 2.0, 3.0, 4.0));
+
+		Mat2 mat = Mat2(1.0, 0.0, 0.0, 1.0);
+		Mat4 mat4;
+
+		Quat quat = Quat(1.0, 1.0, 1.0, 1.0);
+
+		Quat quat2;
 	}
 }