diff --git a/instantpage.js b/instantpage.js
index b7b0fc0..e9af3a4 100644
--- a/instantpage.js
+++ b/instantpage.js
@@ -196,12 +196,13 @@ function mouseoverListener(event) {
     return
   }
 
-  anchorElement.addEventListener('mouseout', mouseoutListener, {passive: true})
-
-  _mouseoverTimer = setTimeout(() => {
-    preload(anchorElement.href, 'high')
-    _mouseoverTimer = undefined
-  }, _delayOnHover)
+  if (!_mouseoverTimer) { //sometimes mouseover triggers a few times before mouseout, setting multiple timeouts but then mouseout only clears the last timeout.
+    anchorElement.addEventListener('mouseout', mouseoutListener, {passive: true})
+    _mouseoverTimer = setTimeout(() => {
+      preload(anchorElement.href, 'high')
+      _mouseoverTimer = undefined
+    }, _delayOnHover)
+  }
 }
 
 function mousedownListener(event) {