diff --git a/compiler/middle/explicit_move_copy.ts b/compiler/middle/explicit_move_copy.ts
index ea9984c..533bec4 100644
--- a/compiler/middle/explicit_move_copy.ts
+++ b/compiler/middle/explicit_move_copy.ts
@@ -13,7 +13,7 @@ class LocalExpliciter {
     private copyable: boolean;
 
     public constructor(private fn: Fn, private local: Local) {
-        this.copyable = copyableIsType(local.vtype);
+        this.copyable = copyableIsType(this.local.vtype);
     }
 
     public pass() {
@@ -23,7 +23,7 @@ class LocalExpliciter {
     }
 
     private explicitSrc(src: RValue): RValue {
-        if (src.type !== "local") {
+        if (src.type !== "local" || src.id !== this.local.id) {
             return src;
         }
         return this.copyable
@@ -41,8 +41,10 @@ function copyableIsType(vtype: VType): boolean {
         case "int":
         case "bool":
         case "string":
+            return true;
         case "ref":
         case "ref_mut":
+            return false;
         case "ptr":
         case "ptr_mut":
             return true;