diff --git a/.changeset/stale-phones-cross.md b/.changeset/stale-phones-cross.md
new file mode 100644
index 00000000..d60674c2
--- /dev/null
+++ b/.changeset/stale-phones-cross.md
@@ -0,0 +1,5 @@
+---
+"@vue-flow/core": patch
+---
+
+Fetch the correct source and target nodes for isValidConnection.
diff --git a/packages/core/src/utils/handle.ts b/packages/core/src/utils/handle.ts
index 2fe2d065..f52bfb9a 100644
--- a/packages/core/src/utils/handle.ts
+++ b/packages/core/src/utils/handle.ts
@@ -191,8 +191,8 @@ export function isValidHandle(
       isValidConnection(connection, {
         nodes,
         edges,
-        sourceNode: findNode(fromNodeId)!,
-        targetNode: findNode(handleNodeId)!,
+        sourceNode: findNode(connection.source)!,
+        targetNode: findNode(connection.target)!,
       })
 
     result.toHandle = handle