diff --git a/javascript/tc.preset.js b/javascript/tc.preset.js
index f5cd161..a40fdc9 100644
--- a/javascript/tc.preset.js
+++ b/javascript/tc.preset.js
@@ -1926,7 +1926,7 @@ function ondrag(x,y,but,cmd,shift,capslock,option,ctrl)
                     last_y = y;
                     break;
                 case 2: // Interpolating
-                    if (interp_mode === 1) {
+                    if (interp_mode === 1 && last_hovered > 0) {
                         var relative_dist_from_start =
                             layout === 0 ? (x - slots[last_hovered].center.x) / (slot_size + spacing) :
                                 (y - slots[last_hovered].center.y) / (slot_size + spacing);
diff --git a/max8.package-info.json b/max8.package-info.json
index 0e6c929..66a73a5 100644
--- a/max8.package-info.json
+++ b/max8.package-info.json
@@ -1,7 +1,7 @@
 {
 	"name" : "tc.preset",
 	"displayname" : "",
-	"version" : "1.4.0",
+	"version" : "1.5.0",
 	"author" : "Théophile Clet",
 	"authors" : [  ],
 	"description" : "A jsui replacement for the preset object",
diff --git a/max9.package-info.json b/max9.package-info.json
index 65d7fd4..0aca5f6 100644
--- a/max9.package-info.json
+++ b/max9.package-info.json
@@ -1,7 +1,7 @@
 {
 	"name" : "tc.preset",
 	"displayname" : "",
-	"version" : "1.4.0",
+	"version" : "1.5.0",
 	"author" : "Théophile Clet",
 	"authors" : [  ],
 	"description" : "A v8ui replacement for the preset object",