diff --git a/plugins/catsplosion.cpp b/plugins/catsplosion.cpp
index 179aec2fd..c0702df2c 100644
--- a/plugins/catsplosion.cpp
+++ b/plugins/catsplosion.cpp
@@ -120,14 +120,14 @@ command_result catsplosion (color_ostream &out, std::vector <std::string> & para
                 female->relations.pregnancy_timer = rand() % 100 + 1;
                 totalchanged++;
             }
-            else if(!female->relations.pregnancy_ptr)
+            else if(!female->relations.pregnancy_genes)
             {
                 df::unit_genes *preg = new df::unit_genes;
                 preg->appearance = female->appearance.genes.appearance;
                 preg->colors = female->appearance.genes.colors;
-                female->relations.pregnancy_ptr = preg;
+                female->relations.pregnancy_genes = preg;
                 female->relations.pregnancy_timer = rand() % 100 + 1;
-                female->relations.pregnancy_mystery = 1; // WTF is this?
+                female->relations.pregnancy_caste = 1;
                 totalcreated ++;
             }
         }
diff --git a/plugins/lua/dfusion/tools.lua b/plugins/lua/dfusion/tools.lua
index b066ccfcb..b2cbcf8e2 100644
--- a/plugins/lua/dfusion/tools.lua
+++ b/plugins/lua/dfusion/tools.lua
@@ -159,22 +159,22 @@ function empregnate(unit)
 		unit.curse.add_tags2.STERILE=false
 	end
 	local genes = unit.appearance.genes
-	if unit.relations.pregnancy_ptr == nil then
+	if unit.relations.pregnancy_genes == nil then
 		print("creating preg ptr.")
 		if false then
-			print(string.format("%x %x",df.sizeof(unit.relations:_field("pregnancy_ptr"))))
+			print(string.format("%x %x",df.sizeof(unit.relations:_field("pregnancy_genes"))))
 			return
 		end
-		unit.relations.pregnancy_ptr = { new = true, assign = genes }
+		unit.relations.pregnancy_genes = { new = true, assign = genes }
 	end
-	local ngenes = unit.relations.pregnancy_ptr
+	local ngenes = unit.relations.pregnancy_genes
 	if #ngenes.appearance ~= #genes.appearance or #ngenes.colors ~= #genes.colors then
 		print("Array sizes incorrect, fixing.")
 		ngenes:assign(genes);
 	end
 	print("Setting preg timer.")
 	unit.relations.pregnancy_timer=10
-	unit.relations.pregnancy_mystery=1
+	unit.relations.pregnancy_caste=1
 end
 menu:add("Empregnate",empregnate)
 function healunit(unit)