diff --git a/library/LuaApi.cpp b/library/LuaApi.cpp
index 453a368f3..ef0b5c3dd 100644
--- a/library/LuaApi.cpp
+++ b/library/LuaApi.cpp
@@ -1780,11 +1780,11 @@ static const LuaWrapper::FunctionReg dfhack_units_module[] = {
     WRAPM(Units, getStressCategory),
     WRAPM(Units, getStressCategoryRaw),
     WRAPM(Units, subtractActionTimers),
-    WRAPM(Units, subtractCategoryActionTimers),
+    WRAPM(Units, subtractGroupActionTimers),
     WRAPM(Units, multiplyActionTimers),
-    WRAPM(Units, multiplyCategoryActionTimers),
+    WRAPM(Units, multiplyGroupActionTimers),
     WRAPM(Units, setActionTimers),
-    WRAPM(Units, setCategoryActionTimers),
+    WRAPM(Units, setGroupActionTimers),
     { NULL, NULL }
 };
 
diff --git a/library/include/modules/Units.h b/library/include/modules/Units.h
index 158f22f54..effa7cd1a 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 affectedActionTypeGroup);
+DFHACK_EXPORT void subtractGroupActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeGroup);
 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 affectedActionTypeGroup);
+DFHACK_EXPORT void multiplyGroupActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionTypeGroup);
 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 affectedActionTypeGroup);
+DFHACK_EXPORT void setGroupActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeGroup);
 
 }
 }
diff --git a/library/modules/Units.cpp b/library/modules/Units.cpp
index 3b2b285a4..20badb1b5 100644
--- a/library/modules/Units.cpp
+++ b/library/modules/Units.cpp
@@ -2032,7 +2032,7 @@ 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 affectedActionTypeGroup)
+void Units::subtractGroupActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeGroup)
 {
     CHECK_NULL_POINTER(unit);
     for (auto action : unit->actions) {
@@ -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 affectedActionTypeGroup)
+void Units::multiplyGroupActionTimers(color_ostream &out, df::unit *unit, float amount, df::unit_action_type_group affectedActionTypeGroup)
 {
     CHECK_NULL_POINTER(unit);
     if (!validateMultiplyActionTimerAmount(out, amount))
@@ -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 affectedActionTypeGroup)
+void Units::setGroupActionTimers(color_ostream &out, df::unit *unit, int32_t amount, df::unit_action_type_group affectedActionTypeGroup)
 {
     CHECK_NULL_POINTER(unit);
     if (!validateSetActionTimerAmount(out, amount))
diff --git a/plugins/fastdwarf.cpp b/plugins/fastdwarf.cpp
index ea18437d6..fe0b90be5 100644
--- a/plugins/fastdwarf.cpp
+++ b/plugins/fastdwarf.cpp
@@ -83,7 +83,7 @@ DFhackCExport command_result plugin_onupdate ( color_ostream &out )
 
         if (enable_fastdwarf)
         {
-            Units::setCategoryActionTimers(out, unit, 1, df::unit_action_type_group::All);
+            Units::setGroupActionTimers(out, unit, 1, df::unit_action_type_group::All);
         }
     }
     return CR_OK;