diff --git a/ui/index.html b/ui/index.html
index 88917b68..6cc6978c 100644
--- a/ui/index.html
+++ b/ui/index.html
@@ -227,7 +227,7 @@
                     </td></tr>
                     <tr id="lora_alpha_container" class="pl-5">
                         <td><label for="lora_alpha_slider">LoRA Strength:</label></td>
-                        <td> <input id="lora_alpha_slider" name="lora_alpha_slider" class="editor-slider" value="50" type="range" min="0" max="100"> <input id="lora_alpha" name="lora_alpha" size="4" pattern="^[0-9\.]+$" onkeypress="preventNonNumericalInput(event)"><br/></td>
+                        <td> <input id="lora_alpha_slider" name="lora_alpha_slider" class="editor-slider" value="50" type="range" min="-200" max="200"> <input id="lora_alpha" name="lora_alpha" size="4" pattern="^-?[0-9]*\.?[0-9]*$" onkeypress="preventNonNumericalInput(event)"><br/></td>
                     </tr>
                     <tr class="pl-5"><td><label for="hypernetwork_model">Hypernetwork:</label></td><td>
                         <input id="hypernetwork_model" type="text" spellcheck="false" autocomplete="off" class="model-filter" data-path="" />
diff --git a/ui/media/js/main.js b/ui/media/js/main.js
index ef27cf1b..e4043fa0 100644
--- a/ui/media/js/main.js
+++ b/ui/media/js/main.js
@@ -1725,10 +1725,10 @@ function updateLoraAlpha() {
 }
 
 function updateLoraAlphaSlider() {
-    if (loraAlphaField.value < 0) {
-        loraAlphaField.value = 0
-    } else if (loraAlphaField.value > 1) {
-        loraAlphaField.value = 1
+    if (loraAlphaField.value < -2) {
+        loraAlphaField.value = -2
+    } else if (loraAlphaField.value > 2) {
+        loraAlphaField.value = 2
     }
 
     loraAlphaSlider.value = loraAlphaField.value * 100
diff --git a/ui/media/js/utils.js b/ui/media/js/utils.js
index 6ddb0ae6..871ba714 100644
--- a/ui/media/js/utils.js
+++ b/ui/media/js/utils.js
@@ -402,12 +402,12 @@ function debounce(func, wait, immediate) {
 
 function preventNonNumericalInput(e) {
     e = e || window.event
-    let charCode = typeof e.which == "undefined" ? e.keyCode : e.which
-    let charStr = String.fromCharCode(charCode)
-    let re = e.target.getAttribute("pattern") || "^[0-9]+$"
-    re = new RegExp(re)
+    const charCode = typeof e.which == "undefined" ? e.keyCode : e.which
+    const charStr = String.fromCharCode(charCode)
+    const newInputValue = `${e.target.value}${charStr}`
+    const re = new RegExp(e.target.getAttribute("pattern") || "^[0-9]+$")
 
-    if (!charStr.match(re)) {
+    if (!re.test(charStr) && !re.test(newInputValue)) {
         e.preventDefault()
     }
 }