diff --git a/Userland/Libraries/LibGL/GL/gl.h b/Userland/Libraries/LibGL/GL/gl.h
index a2b0d8163b..e492f8acea 100644
--- a/Userland/Libraries/LibGL/GL/gl.h
+++ b/Userland/Libraries/LibGL/GL/gl.h
@@ -474,6 +474,7 @@ GLAPI void glMatrixMode(GLenum mode);
 GLAPI void glOrtho(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble nearVal, GLdouble farVal);
 GLAPI void glPushMatrix();
 GLAPI void glPopMatrix();
+GLAPI void glMultMatrixd(GLdouble const* matrix);
 GLAPI void glMultMatrixf(GLfloat const* matrix);
 GLAPI void glRotatef(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
 GLAPI void glScaled(GLdouble x, GLdouble y, GLdouble z);
diff --git a/Userland/Libraries/LibGL/GLMat.cpp b/Userland/Libraries/LibGL/GLMat.cpp
index b056f18705..901b027c93 100644
--- a/Userland/Libraries/LibGL/GLMat.cpp
+++ b/Userland/Libraries/LibGL/GLMat.cpp
@@ -67,6 +67,11 @@ static constexpr Matrix4x4<O> transpose_input_matrix(I const* matrix)
     // clang-format on
 }
 
+void glMultMatrixd(GLdouble const* matrix)
+{
+    g_gl_context->gl_mult_matrix(transpose_input_matrix<double, float>(matrix));
+}
+
 void glMultMatrixf(GLfloat const* matrix)
 {
     g_gl_context->gl_mult_matrix(transpose_input_matrix<float, float>(matrix));