diff --git a/cfg/opengl.cfg b/cfg/opengl.cfg
index 46d5f315f..bd90cf316 100644
--- a/cfg/opengl.cfg
+++ b/cfg/opengl.cfg
@@ -193,6 +193,18 @@
       <not-bool/>
     </arg>
   </function>
+  <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glLoadMatrix.xml -->
+  <!-- void glLoadMatrixd( const GLdouble * m); -->
+  <!-- void glLoadMatrixf( const GLfloat * m); -->
+  <function name="glLoadMatrixd,glLoadMatrixf">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glMatrixMode.xml -->
   <!-- void glMatrixMode( GLenum mode); -->
   <function name="glMatrixMode">
@@ -423,6 +435,17 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glUseProgram.xml -->
+  <!-- void glUseProgram( GLuint program); -->
+  <function name="glUseProgram">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+  </function>
   <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glVertex.xml -->
   <!-- void glVertex2s( GLshort x, GLshort y ); -->
   <!-- void glVertex2i( GLint x, GLint y ); -->