--- a/data/json/items/tool_armor.json
+++ b/data/json/items/tool_armor.json
@@ -1109,7 +1109,8 @@
     "max_charges": 100,
     "initial_charges": 100,
     "ammo": "gasfilter_s",
-    "use_action": "GASMASK"
+    "use_action": "GASMASK",
+    "charges_per_use": 1
   },
   {
     "id": "mask_gas",
@@ -1136,7 +1137,8 @@
     "max_charges": 100,
     "initial_charges": 100,
     "ammo": "gasfilter_m",
-    "use_action": "GASMASK"
+    "use_action": "GASMASK",
+    "charges_per_use": 1
   },
   {
     "id": "mask_gas_xl",
@@ -1163,7 +1165,8 @@
     "initial_charges": 100,
     "ammo": "gasfilter_m",
     "use_action": "GASMASK",
-    "flags": [ "OVERSIZE", "SLEEP_IGNORE" ]
+    "flags": [ "OVERSIZE", "SLEEP_IGNORE" ],
+    "charges_per_use": 1
   },
   {
     "id": "mask_fsurvivor",
@@ -1191,7 +1194,8 @@
     "initial_charges": 100,
     "ammo": "gasfilter_m",
     "use_action": "GASMASK",
-    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ]
+    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ],
+    "charges_per_use": 1
   },
   {
     "id": "mask_bunker",
@@ -1248,7 +1253,8 @@
     "encumbrance": 20,
     "coverage": 100,
     "qualities": [ [ "GLARE", 2 ] ],
-    "material_thickness": 3
+    "material_thickness": 3,
+    "charges_per_use": 1
   },
   {
     "id": "mask_hsurvivor",
@@ -1276,7 +1282,8 @@
     "environmental_protection": 1,
     "environmental_protection_with_filter": 15,
     "qualities": [ [ "GLARE", 1 ] ],
-    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ]
+    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ],
+    "charges_per_use": 1
   },
   {
     "id": "mask_lsurvivor",
@@ -1333,7 +1340,8 @@
     "environmental_protection": 1,
     "environmental_protection_with_filter": 15,
     "qualities": [ [ "GLARE", 1 ] ],
-    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ]
+    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ],
+    "charges_per_use": 1
   },
   {
     "id": "mask_wsurvivor",
@@ -1389,7 +1398,8 @@
     "environmental_protection": 1,
     "environmental_protection_with_filter": 15,
     "qualities": [ [ "GLARE", 1 ] ],
-    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ]
+    "flags": [ "VARSIZE", "STURDY", "SUN_GLASSES", "SLEEP_IGNORE" ],
+    "charges_per_use": 1
   },
   {
     "id": "goggles_nv",