diff --git a/lib/frame.js b/lib/frame.js
index 49a2d17..9beb070 100644
--- a/lib/frame.js
+++ b/lib/frame.js
@@ -83,6 +83,16 @@
 			return false;
 		}
 		
+		try {
+			var href = window.location.href;
+		}
+		catch (e){
+			// we are unable to read the location due to SOP
+			// therefore we also can not intercept anything.
+			log("NOT intercepting window du to SOP", window);
+			return false;
+		}
+		
 		log("intercepting window", window);
 		intercept(
 			{subject: window},
diff --git a/lib/intercept.js b/lib/intercept.js
index a942c8c..30433c6 100644
--- a/lib/intercept.js
+++ b/lib/intercept.js
@@ -32,7 +32,16 @@
 	scope.setRandomSupplyByType = setRandomSupplyByType;
 	
 	function getURL(window){
-		if (!window.location.href || window.location.href === "about:blank"){
+		var href;
+		try {
+			href = window.location.href;
+		}
+		catch (e){
+			// unable to read location due to SOP
+			// since we are not able to do anything in that case we can allow everything
+			return "about:SOP";
+		}
+		if (!href || href === "about:blank"){
 			if (window !== window.parent){
 				return getURL(window.parent);
 			}