diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index aca5d49824c..adef4853002 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -222,14 +222,6 @@ typedef struct bNodeType {
 	/* gpu */
 	NodeGPUExecFunction gpufunc;
 	
-	/* Group type static info
-	 * 
-	 * XXX This data is needed by group operators. If these operators could be implemented completely in Python,
-	 * the static data could instead be stored in Python classes and would need no special treatment.
-	 * Due to the way group operators move nodes between data blocks this is currently not possible.
-	 */
-	char group_tree_idname[64];		/* tree type associated to the group node type */
-	
 	/* RNA integration */
 	ExtensionRNA ext;
 } bNodeType;
diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 11431e355a8..f7670560e20 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -2722,12 +2722,6 @@ static void def_group(StructRNA *srna)
 	RNA_def_property_struct_type(prop, "PropertyGroup");
 	RNA_def_property_flag(prop, PROP_IDPROPERTY);
 	RNA_def_property_ui_text(prop, "Interface", "Interface socket data");
-
-	/* registration */
-	prop = RNA_def_property(srna, "bl_group_tree_idname", PROP_STRING, PROP_NONE);
-	RNA_def_property_string_sdna(prop, NULL, "typeinfo->group_tree_idname");
-	RNA_def_property_flag(prop, PROP_REGISTER | PROP_NEVER_CLAMP);
-	RNA_def_property_ui_text(prop, "Group Tree Type", "");
 }
 
 static void def_frame(StructRNA *srna)
diff --git a/source/blender/nodes/composite/nodes/node_composite_common.c b/source/blender/nodes/composite/nodes/node_composite_common.c
index df1c5d3316b..df373f5e26a 100644
--- a/source/blender/nodes/composite/nodes/node_composite_common.c
+++ b/source/blender/nodes/composite/nodes/node_composite_common.c
@@ -61,7 +61,6 @@ void register_node_type_cmp_group(void)
 	node_type_size(&ntype, 120, 60, 200);
 	node_type_label(&ntype, node_group_label);
 	node_type_update(&ntype, NULL, node_group_verify);
-	strcpy(ntype.group_tree_idname, "CompositorNodeTree");
 
 	nodeRegisterType(&ntype);
 }
diff --git a/source/blender/nodes/shader/nodes/node_shader_common.c b/source/blender/nodes/shader/nodes/node_shader_common.c
index b1d77cc96ea..e5fe056856b 100644
--- a/source/blender/nodes/shader/nodes/node_shader_common.c
+++ b/source/blender/nodes/shader/nodes/node_shader_common.c
@@ -242,7 +242,6 @@ void register_node_type_sh_group(void)
 	node_type_size(&ntype, 120, 60, 200);
 	node_type_label(&ntype, node_group_label);
 	node_type_update(&ntype, NULL, node_group_verify);
-	strcpy(ntype.group_tree_idname, "ShaderNodeTree");
 	node_type_exec(&ntype, group_initexec, group_freeexec, group_execute);
 	node_type_gpu(&ntype, gpu_group_execute);
 	
diff --git a/source/blender/nodes/texture/nodes/node_texture_common.c b/source/blender/nodes/texture/nodes/node_texture_common.c
index ee03323fb5d..d96042623b2 100644
--- a/source/blender/nodes/texture/nodes/node_texture_common.c
+++ b/source/blender/nodes/texture/nodes/node_texture_common.c
@@ -169,7 +169,6 @@ void register_node_type_tex_group(void)
 	node_type_size(&ntype, 120, 60, 200);
 	node_type_label(&ntype, node_group_label);
 	node_type_update(&ntype, NULL, node_group_verify);
-	strcpy(ntype.group_tree_idname, "TextureNodeTree");
 	node_type_exec(&ntype, group_initexec, group_freeexec, group_execute);
 	
 	nodeRegisterType(&ntype);