diff --git a/cfg/opengl.cfg b/cfg/opengl.cfg
index 9ec5fd957..c8be2fe15 100644
--- a/cfg/opengl.cfg
+++ b/cfg/opengl.cfg
@@ -88,6 +88,43 @@
       <not-bool/>
     </arg>
   </function>
+  <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glNormal.xml -->
+  <!-- void glNormal3b( GLbyte nx, GLbyte ny, GLbyte nz ); -->
+  <!-- void glNormal3d( GLdouble nx, GLdouble ny, GLdouble nz ); -->
+  <!-- void glNormal3f( GLfloat nx, GLfloat ny, GLfloat nz ); -->
+  <!-- void glNormal3i( GLint nx, GLint ny, GLint nz ); -->
+  <!-- void glNormal3s( GLshort nx, GLshort ny, GLshort nz ); -->
+  <function name="glNormal3b,glNormal3d,glNormal3f,glNormal3i,glNormal3s">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+    </arg>
+    <arg nr="3" direction="in">
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+  </function>
+  <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glNormal.xml -->
+  <!-- void glNormal3bv( const GLbyte * v ); -->
+  <!-- void glNormal3dv( const GLdouble * v ); -->
+  <!-- void glNormal3fv( const GLfloat * v ); -->
+  <!-- void glNormal3iv( const GLint * v ); -->
+  <!-- void glNormal3sv( const GLshort * v ); -->
+  <function name="glNormal3bv,glNormal3dv,glNormal3fv,glNormal3iv,glNormal3sv">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-null/>
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+  </function>
   <!-- https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glRotate.xml -->
   <!-- void glRotated( GLdouble angle, GLdouble x, GLdouble y, GLdouble z ); -->
   <!-- void glRotatef( GLfloat angle, GLfloat x, GLfloat y, GLfloat z ); -->