diff --git a/plugins/fields/text/params/text.xml b/plugins/fields/text/params/text.xml
index f9a8dda4f5611..8797ae611a2af 100644
--- a/plugins/fields/text/params/text.xml
+++ b/plugins/fields/text/params/text.xml
@@ -22,10 +22,12 @@
 
 			<field
 				name="maxlength"
-				type="text"
-				filter="integer"
+				type="number"
 				label="PLG_FIELDS_TEXT_PARAMS_MAXLENGTH_LABEL"
 				description="PLG_FIELDS_TEXT_PARAMS_MAXLENGTH_DESC"
+				min="0"
+				filter="integer"
+				validate="number"
 			/>
 		</fieldset>
 	</fields>
diff --git a/plugins/fields/text/text.xml b/plugins/fields/text/text.xml
index 2c9806ff0efd0..57a118c2e2408 100644
--- a/plugins/fields/text/text.xml
+++ b/plugins/fields/text/text.xml
@@ -41,10 +41,12 @@
 
 				<field
 					name="maxlength"
-					type="text"
-					filter="integer"
+					type="number"
 					label="PLG_FIELDS_TEXT_PARAMS_MAXLENGTH_LABEL"
 					description="PLG_FIELDS_TEXT_PARAMS_MAXLENGTH_DESC"
+					min="0"
+					filter="integer"
+					validate="number"
 				/>
 			</fieldset>
 		</fields>
diff --git a/plugins/fields/textarea/params/textarea.xml b/plugins/fields/textarea/params/textarea.xml
index e96bb170b9046..6bdf0c3c898da 100644
--- a/plugins/fields/textarea/params/textarea.xml
+++ b/plugins/fields/textarea/params/textarea.xml
@@ -20,10 +20,12 @@
 
 			<field
 				name="maxlength"
-				type="text"
-				filter="integer"
+				type="number"
 				label="PLG_FIELDS_TEXTAREA_PARAMS_MAXLENGTH_LABEL"
 				description="PLG_FIELDS_TEXTAREA_PARAMS_MAXLENGTH_DESC"
+				min="0"
+				filter="integer"
+				validate="number"
 			/>
 
 			<field
diff --git a/plugins/fields/textarea/textarea.xml b/plugins/fields/textarea/textarea.xml
index 3b0dc2f0dbdae..5e2f19d91c332 100644
--- a/plugins/fields/textarea/textarea.xml
+++ b/plugins/fields/textarea/textarea.xml
@@ -41,10 +41,12 @@
 
 				<field
 					name="maxlength"
-					type="text"
-					filter="integer"
+					type="number"
 					label="PLG_FIELDS_TEXTAREA_PARAMS_MAXLENGTH_LABEL"
 					description="PLG_FIELDS_TEXTAREA_PARAMS_MAXLENGTH_DESC"
+					min="0"
+					filter="integer"
+					validate="number"
 				/>
 
 				<field