diff --git a/data/mods/Magiclysm/Spells/debug.json b/data/mods/Magiclysm/Spells/debug.json
index a0ac89ceecd15..c99193044fa48 100644
--- a/data/mods/Magiclysm/Spells/debug.json
+++ b/data/mods/Magiclysm/Spells/debug.json
@@ -112,21 +112,6 @@
     "base_energy_cost": 100,
     "energy_source": "STAMINA"
   },
-  {
-    "id": "debug_fatigue",
-    "type": "SPELL",
-    "name": "Debug Fatigue Spell",
-    "description": "Uses a little fatigue",
-    "message": "Debug spell %s cast.",
-    "valid_targets": [ "self" ],
-    "effect": "none",
-    "shape": "blast",
-    "min_range": 1,
-    "max_range": 1,
-    "base_casting_time": 100,
-    "base_energy_cost": 100,
-    "energy_source": "FATIGUE"
-  },
   {
     "id": "debug_polymorph",
     "type": "SPELL",
diff --git a/doc/MAGIC.md b/doc/MAGIC.md
index eb74d0bf4b570..9d66f225036f4 100644
--- a/doc/MAGIC.md
+++ b/doc/MAGIC.md
@@ -21,7 +21,7 @@ In `data/mods/Magiclysm` there is a template spell, copied here for your perusal
   "spell_class": "NONE",                                    //
 	"base_casting_time": 100,                                 // this is the casting time (in moves)
 	"base_energy_cost": 10,                                   // the amount of energy (of the requisite type) to cast the spell
-	"energy_source": "MANA",                                  // the type of energy used to cast the spell. types are: MANA, BIONIC, HP, STAMINA, FATIGUE, NONE (none will not use mana)
+	"energy_source": "MANA",                                  // the type of energy used to cast the spell. types are: MANA, BIONIC, HP, STAMINA, NONE (none will not use mana)
   "components": [requirement_id]                            // an id from a requirement, like the ones you use for crafting. spell components require to cast.
 	"difficulty": 12,                                         // the difficulty to learn/cast the spell
 	"max_level": 10,                                          // maximum level you can achieve in the spell
diff --git a/src/activity_handlers.cpp b/src/activity_handlers.cpp
index 5c8bcb0cbd7e8..a3f25c8617183 100644
--- a/src/activity_handlers.cpp
+++ b/src/activity_handlers.cpp
@@ -4281,9 +4281,6 @@ void activity_handlers::spellcasting_finish( player_activity *act, player *p )
             case magic_energy_type::hp:
                 blood_magic( p, cost );
                 break;
-            case magic_energy_type::fatigue:
-                p->mod_fatigue( cost );
-                break;
             case magic_energy_type::none:
             default:
                 break;
diff --git a/src/magic.cpp b/src/magic.cpp
index 12b4d6cffc0fb..5567bbf8c4cb3 100644
--- a/src/magic.cpp
+++ b/src/magic.cpp
@@ -153,7 +153,6 @@ std::string enum_to_string<magic_energy_type>( magic_energy_type data )
 {
     switch( data ) {
     case magic_energy_type::bionic: return "BIONIC";
-    case magic_energy_type::fatigue: return "FATIGUE";
     case magic_energy_type::hp: return "HP";
     case magic_energy_type::mana: return "MANA";
     case magic_energy_type::none: return "NONE";
@@ -1047,8 +1046,6 @@ std::string spell::energy_string() const
             return _( "stamina" );
         case magic_energy_type::bionic:
             return _( "bionic power" );
-        case magic_energy_type::fatigue:
-            return _( "fatigue" );
         default:
             return "";
     }
@@ -1070,9 +1067,6 @@ std::string spell::energy_cost_string( const Character &guy ) const
         auto pair = get_hp_bar( energy_cost( guy ), guy.get_stamina_max() );
         return colorize( pair.first, pair.second );
     }
-    if( energy_source() == magic_energy_type::fatigue ) {
-        return colorize( std::to_string( energy_cost( guy ) ), c_cyan );
-    }
     debugmsg( "ERROR: Spell %s has invalid energy source.", id().c_str() );
     return _( "error: energy_type" );
 }
@@ -1095,10 +1089,6 @@ std::string spell::energy_cur_string( const Character &guy ) const
     if( energy_source() == magic_energy_type::hp ) {
         return "";
     }
-    if( energy_source() == magic_energy_type::fatigue ) {
-        const std::pair<std::string, nc_color> pair = guy.get_fatigue_description();
-        return colorize( pair.first, pair.second );
-    }
     debugmsg( "ERROR: Spell %s has invalid energy source.", id().c_str() );
     return _( "error: energy_type" );
 }
@@ -1729,8 +1719,6 @@ bool known_magic::has_enough_energy( const Character &guy, const spell &sp ) con
                 }
             }
             return false;
-        case magic_energy_type::fatigue:
-            return guy.get_fatigue() < fatigue_levels::EXHAUSTED;
         case magic_energy_type::none:
             return true;
         default:
diff --git a/src/magic.h b/src/magic.h
index fe4195a46d1b2..a4b7ed49c7d6f 100644
--- a/src/magic.h
+++ b/src/magic.h
@@ -82,7 +82,6 @@ enum class magic_energy_type : int {
     mana,
     stamina,
     bionic,
-    fatigue,
     none,
     last
 };