diff --git a/GL/glx/indirect_size_get.c b/GL/glx/indirect_size_get.c
index f64fb7ece..1a1b12399 100644
--- a/GL/glx/indirect_size_get.c
+++ b/GL/glx/indirect_size_get.c
@@ -538,6 +538,7 @@ __glGetBooleanv_size(GLenum e)
     case GL_UNPACK_SKIP_IMAGES:
     case GL_UNPACK_IMAGE_HEIGHT:
     case GL_TEXTURE_3D:
+    case GL_MAX_3D_TEXTURE_SIZE:
     case GL_VERTEX_ARRAY:
     case GL_NORMAL_ARRAY:
     case GL_COLOR_ARRAY: