diff --git a/.changeset/fix-null-proto-hasownproperty.md b/.changeset/fix-null-proto-hasownproperty.md
new file mode 100644
index 000000000..8ee745c4f
--- /dev/null
+++ b/.changeset/fix-null-proto-hasownproperty.md
@@ -0,0 +1,5 @@
+---
+"solid-js": patch
+---
+
+Use Object.prototype.hasOwnProperty.call() to support null-prototype objects in store proxies
diff --git a/packages/solid/store/src/mutable.ts b/packages/solid/store/src/mutable.ts
index 9d2eb45d1..3427702d3 100644
--- a/packages/solid/store/src/mutable.ts
+++ b/packages/solid/store/src/mutable.ts
@@ -50,7 +50,7 @@ const proxyTraps: ProxyHandler<StoreNode> = {
     if (!tracked) {
       const desc = Object.getOwnPropertyDescriptor(target, property);
       const isFunction = typeof value === "function";
-      if (getListener() && (!isFunction || target.hasOwnProperty(property)) && !(desc && desc.get))
+      if (getListener() && (!isFunction || Object.prototype.hasOwnProperty.call(target, property)) && !(desc && desc.get))
         value = getNode(nodes, property, value)();
       else if (value != null && isFunction && value === Array.prototype[property as any]) {
         return (...args: unknown[]) =>
diff --git a/packages/solid/store/src/store.ts b/packages/solid/store/src/store.ts
index 49030f886..135821eae 100644
--- a/packages/solid/store/src/store.ts
+++ b/packages/solid/store/src/store.ts
@@ -188,7 +188,7 @@ const proxyTraps: ProxyHandler<StoreNode> = {
       const desc = Object.getOwnPropertyDescriptor(target, property);
       if (
         getListener() &&
-        (typeof value !== "function" || target.hasOwnProperty(property)) &&
+        (typeof value !== "function" || Object.prototype.hasOwnProperty.call(target, property)) &&
         !(desc && desc.get)
       )
         value = getNode(nodes, property, value)();