diff --git a/src/blockdom/attributes.ts b/src/blockdom/attributes.ts
index b41a129b..d3466be9 100644
--- a/src/blockdom/attributes.ts
+++ b/src/blockdom/attributes.ts
@@ -139,7 +139,8 @@ export function updateClass(this: HTMLElement, val: any, oldVal: any) {
 
 export function makePropSetter(name: string): Setter<HTMLElement> {
   return function setProp(this: HTMLElement, value: any) {
-    (this as any)[name] = value || "";
+    // support 0, fallback to empty string for other falsy values
+    (this as any)[name] = value === 0 ? 0 : value || "";
   };
 }
 
diff --git a/tests/blockdom/block_attributes.test.ts b/tests/blockdom/block_attributes.test.ts
index be053e35..eb468c84 100644
--- a/tests/blockdom/block_attributes.test.ts
+++ b/tests/blockdom/block_attributes.test.ts
@@ -169,13 +169,25 @@ describe("properties", () => {
     expect(input.value).toBe("potato");
   });
 
-  test("input with value attribute, and undefined given", () => {
+  test("input with value attribute, and falsy value given", () => {
     const block = createBlock(`<input block-attribute-0="value"/>`);
 
     const tree = block([undefined]);
     mount(tree, fixture);
     const input = fixture.querySelector("input")!;
     expect(input.value).toBe("");
+
+    patch(tree, block([null]));
+    expect(input.value).toBe("");
+
+    patch(tree, block([0]));
+    expect(input.value).toBe("0");
+
+    patch(tree, block([""]));
+    expect(input.value).toBe("");
+
+    patch(tree, block([false]));
+    expect(input.value).toBe("");
   });
 
   test("input type=checkbox with checked attribute", () => {