diff --git a/qglview/gltypes.cpp b/qglview/gltypes.cpp
index 1b393d5..d27782d 100644
--- a/qglview/gltypes.cpp
+++ b/qglview/gltypes.cpp
@@ -69,8 +69,8 @@ void glDrawQuad(QGLShaderProgram * prog, GLfloat x, GLfloat y, GLfloat w, GLfloa
 
 
 QMatrix4x4 getGLMatrix(GLenum matrix) {
-	GLfloat gm[16];
-	glGetFloatv(matrix, gm);
+	GLdouble gm[16];
+	glGetDoublev(matrix, gm);
 	qreal qm[16];
 	for (int i = 0; i < 16; ++i)
 		qm[i] = gm[i];
@@ -79,12 +79,12 @@ QMatrix4x4 getGLMatrix(GLenum matrix) {
 
 
 void setGLMatrix(QMatrix4x4 matrix) {
-	GLfloat gm[16];
+	GLdouble gm[16];
 	qreal qm[16];
 	matrix.transposed().copyDataTo(qm);
 	for (int i = 0; i < 16; ++i)
 		gm[i] = qm[i];
-	glLoadMatrixf(gm);
+	glLoadMatrixd(gm);
 }