diff --git a/ods_tools/data/analysis_settings_schema.json b/ods_tools/data/analysis_settings_schema.json
index c67e2c96..d678cc24 100644
--- a/ods_tools/data/analysis_settings_schema.json
+++ b/ods_tools/data/analysis_settings_schema.json
@@ -416,16 +416,23 @@
 	"pla": {
 	    "type": "boolean",
 	    "title": "Apply Post Loss Amplification",
-	    "description": "If true apply post loss amplification to losses",
+	    "description": "If true apply post loss amplification/reduction to losses.",
 	    "default": false
 	},
 	"pla_secondary_factor": {
 	    "type": "number",
 	    "title": "Optional secondary factor for Post Loss Amplification",
-	    "description": "Secondary factor to be applied to post loss amplificaion",
+	    "description": "Secondary factor to apply to post loss amplification/reduction factors.",
 	    "default": 1,
 	    "minimum": 0,
 	    "maximum": 1
+	},
+	"pla_uniform_factor": {
+	    "type": "number",
+	    "title": "Optional uniform factor for Post Loss Amplification",
+	    "description": "Uniform factor to apply across all losses.",
+	    "default": 0,
+	    "minimum": 0
 	}
     },
     "required": [