diff --git a/scripts_src/ncr/scrobo.ssl b/scripts_src/ncr/scrobo.ssl
index e655e2f79..6de0bbbd7 100644
--- a/scripts_src/ncr/scrobo.ssl
+++ b/scripts_src/ncr/scrobo.ssl
@@ -106,7 +106,17 @@ procedure Heal_Robo(variable bonus);
 #define LVAR_WAITING                    (9)
 #define LVAR_FOLLOW_DISTANCE            (10)
 #define LVAR_TEAM                       (11)
+
+/**
+ * Counter of "healing" (repair) usage.
+ * Each use increases by 50, every passing hour decreases by 50.
+ * More advanced Repair skill allows to use Repair more often.
+ */
 #define LVAR_Heal_Count                 (12)
+/**
+ * Time counter to keep track when Robodog was last repaired.
+ * Decreases LVAR_Heal_Count when hit (every hour).
+ */
 #define LVAR_Heal_Dec_Time              (13)
 
 /* Imported variables from the Map scripts. These should only be
@@ -480,7 +490,7 @@ procedure Node1100 begin // rejoin party
 end
 
 procedure Heal_Robo(variable bonus) begin
-   if (local_var(LVAR_Heal_Count) < has_skill(source_obj, SKILL_SPEECH)) then begin
+   if (local_var(LVAR_Heal_Count) < has_skill(source_obj, SKILL_REPAIR)) then begin
       if (skill_success(source_obj, SKILL_REPAIR, bonus)) then begin
          critter_heal(self_obj, Random(10, 40));
          set_local_var(LVAR_Heal_Count, local_var(LVAR_Heal_Count) + 50);