diff --git a/library/include/modules/Units.h b/library/include/modules/Units.h
index 004c0bcbf..4c8513e27 100644
--- a/library/include/modules/Units.h
+++ b/library/include/modules/Units.h
@@ -227,11 +227,11 @@ DFHACK_EXPORT int getStressCategory(df::unit *unit);
 DFHACK_EXPORT int getStressCategoryRaw(int32_t stress_level);
 
 DFHACK_EXPORT void subtractActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type affectedActionType);
-DFHACK_EXPORT void subtractCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionCategory);
+DFHACK_EXPORT void subtractCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeCategory);
 DFHACK_EXPORT void multiplyActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type affectedActionType);
-DFHACK_EXPORT void multiplyCategoryActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionCategory);
+DFHACK_EXPORT void multiplyCategoryActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionTypeCategory);
 DFHACK_EXPORT void setActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type affectedActionType);
-DFHACK_EXPORT void setCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionCategory);
+DFHACK_EXPORT void setCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeCategory);
 
 }
 }
diff --git a/library/modules/Units.cpp b/library/modules/Units.cpp
index b663965f8..9656c75e6 100644
--- a/library/modules/Units.cpp
+++ b/library/modules/Units.cpp
@@ -2032,13 +2032,13 @@ void Units::subtractActionTimers(color_ostream &out, df::unit *unit, int32_t amo
     }
 }
 
-void Units::subtractCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionCategory)
+void Units::subtractCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeCategory)
 {
     CHECK_NULL_POINTER(unit);
     for (auto action : unit->actions) {
         auto list = ENUM_ATTR(unit_action_type, group, action->type);
         for (size_t i = 0; i < list.size; i++) {
-            if (list.items[i] == affectedActionCategory) {
+            if (list.items[i] == affectedActionTypeCategory) {
                 mutateActionTimerCore(action, [=](double timerValue){return max(timerValue - amount, 1.0);});
                 break;
             }
@@ -2065,7 +2065,7 @@ void Units::multiplyActionTimers(color_ostream &out, df::unit *unit, float amoun
     }
 }
 
-void Units::multiplyCategoryActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionCategory)
+void Units::multiplyCategoryActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionTypeCategory)
 {
     CHECK_NULL_POINTER(unit);
     if (!validateMultiplyActionTimerAmount(out, amount))
@@ -2073,7 +2073,7 @@ void Units::multiplyCategoryActionTimers(color_ostream &out, df::unit *unit, flo
     for (auto action : unit->actions) {
         auto list = ENUM_ATTR(unit_action_type, group, action->type);
         for (size_t i = 0; i < list.size; i++) {
-            if (list.items[i] == affectedActionCategory) {
+            if (list.items[i] == affectedActionTypeCategory) {
                 mutateActionTimerCore(action, [=](double timerValue){return max(timerValue * amount, 1.0);});
                 break;
             }
@@ -2100,7 +2100,7 @@ void Units::setActionTimers(color_ostream &out, df::unit *unit, int32_t amount,
     }
 }
 
-void Units::setCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionCategory)
+void Units::setCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeCategory)
 {
     CHECK_NULL_POINTER(unit);
     if (!validateSetActionTimerAmount(out, amount))
@@ -2108,7 +2108,7 @@ void Units::setCategoryActionTimers(color_ostream &out, df::unit *unit, int32_t
     for (auto action : unit->actions) {
         auto list = ENUM_ATTR(unit_action_type, group, action->type);
         for (size_t i = 0; i < list.size; i++) {
-            if (list.items[i] == affectedActionCategory) {
+            if (list.items[i] == affectedActionTypeCategory) {
                 mutateActionTimerCore(action, [=](double timerValue){return amount;});
                 break;
             }