diff --git a/src/tools/useWindowInnerSize.ts b/src/tools/useWindowInnerSize.ts
index 33ea98f..3b5ce22 100644
--- a/src/tools/useWindowInnerSize.ts
+++ b/src/tools/useWindowInnerSize.ts
@@ -5,12 +5,12 @@ import { Evt } from "evt";
 import { useEvt } from "evt/hooks/useEvt";
 import { isBrowser } from "./isBrowser";
 
-/** Returns -1 values on the server side */
+/** Returns 0 values on the server side */
 export function useWindowInnerSize() {
 
 	const [dimensions, setDimensions] = useState(() => ({
-		"windowInnerWidth": !isBrowser ? -1 : window.innerWidth,
-		"windowInnerHeight": !isBrowser ? -1 : window.innerHeight
+		"windowInnerWidth": !isBrowser ? 0 : window.innerWidth,
+		"windowInnerHeight": !isBrowser ? 0 : window.innerHeight
 	}));
 
 	useEvt(ctx =>
diff --git a/src/useWindowInnerSize.ts b/src/useWindowInnerSize.ts
index a6cc57f..f5b440f 100644
--- a/src/useWindowInnerSize.ts
+++ b/src/useWindowInnerSize.ts
@@ -2,7 +2,7 @@
 import { useWindowInnerSize as useRealWindowInnerSize } from "./tools/useWindowInnerSize";
 import { useViewPortState } from "./ViewPortAdapter";
 
-/** Returns -1 values on the server side */
+/** Returns 0 values on the server side */
 export function useWindowInnerSize() {
 
 	const { viewPortState } = useViewPortState();