diff --git a/apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/StoreWindowState.kt b/apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/StoreWindowState.kt
index 2a1a26df95..05ef27067c 100644
--- a/apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/StoreWindowState.kt
+++ b/apps/multiplatform/common/src/desktopMain/kotlin/chat/simplex/common/StoreWindowState.kt
@@ -11,7 +11,15 @@ data class WindowPositionSize(
   val height: Int = 768,
   val x: Int = 0,
   val y: Int = 0,
-)
+) {
+  fun safeValues(): WindowPositionSize =
+    copy(
+      x = x.coerceIn(-500, 10000),
+      y = x.coerceIn(-100, 10000),
+      width = width.coerceIn(100, 10000),
+      height = height.coerceIn(100, 10000)
+    )
+}
 
 fun getStoredWindowState(): WindowPositionSize =
   try {
@@ -19,7 +27,7 @@ fun getStoredWindowState(): WindowPositionSize =
     var state = if (str == null) {
       WindowPositionSize()
     } else {
-      json.decodeFromString(str)
+      json.decodeFromString<WindowPositionSize>(str).safeValues()
     }
 
     // For some reason on Linux actual width will be 10.dp less after specifying it here. If we specify 1366,
@@ -33,4 +41,4 @@ fun getStoredWindowState(): WindowPositionSize =
   }
 
 fun storeWindowState(state: WindowPositionSize) =
-  appPreferences.desktopWindowState.set(json.encodeToString(state))
+  appPreferences.desktopWindowState.set(json.encodeToString(state.safeValues()))