diff --git a/SafeExamBrowser.Browser.UnitTests/Filters/Rules/SimplifiedRuleTests.cs b/SafeExamBrowser.Browser.UnitTests/Filters/Rules/SimplifiedRuleTests.cs
index c7090331..cfdc2c2e 100644
--- a/SafeExamBrowser.Browser.UnitTests/Filters/Rules/SimplifiedRuleTests.cs
+++ b/SafeExamBrowser.Browser.UnitTests/Filters/Rules/SimplifiedRuleTests.cs
@@ -265,6 +265,44 @@ namespace SafeExamBrowser.Browser.UnitTests.Filters.Rules
 			Test(expression, positive, negative);
 		}
 
+		[TestMethod]
+		public void TestHostWithTrailingSlash()
+		{
+			var expression = "host.org/";
+			var positive = new[]
+			{
+				"scheme://host.org",
+				"scheme://host.org/",
+				"scheme://host.org/url",
+				"scheme://host.org/url/",
+				"scheme://host.org/url/path",
+				"scheme://host.org/url/path/",
+				"scheme://user:password@www.host.org/url/path?param=123#fragment",
+				"scheme://user:password@www.host.org/url/path/?param=123#fragment"
+			};
+
+			Test(expression, positive, Array.Empty<string>());
+		}
+
+		[TestMethod]
+		public void TestHostWithoutTrailingSlash()
+		{
+			var expression = "host.org";
+			var positive = new[]
+			{
+				"scheme://host.org",
+				"scheme://host.org/",
+				"scheme://host.org/url",
+				"scheme://host.org/url/",
+				"scheme://host.org/url/path",
+				"scheme://host.org/url/path/",
+				"scheme://user:password@www.host.org/url/path?param=123#fragment",
+				"scheme://user:password@www.host.org/url/path/?param=123#fragment"
+			};
+
+			Test(expression, positive, Array.Empty<string>());
+		}
+
 		[TestMethod]
 		public void TestPortNumber()
 		{
diff --git a/SafeExamBrowser.Browser/Filters/Rules/SimplifiedRule.cs b/SafeExamBrowser.Browser/Filters/Rules/SimplifiedRule.cs
index 25b07c02..e751cdd4 100644
--- a/SafeExamBrowser.Browser/Filters/Rules/SimplifiedRule.cs
+++ b/SafeExamBrowser.Browser/Filters/Rules/SimplifiedRule.cs
@@ -118,7 +118,7 @@ namespace SafeExamBrowser.Browser.Filters.Rules
 
 		private void ParsePath(string expression)
 		{
-			if (!string.IsNullOrWhiteSpace(expression))
+			if (!string.IsNullOrWhiteSpace(expression) && !expression.Equals("/"))
 			{
 				expression = Regex.Escape(expression);
 				expression = ReplaceWildcard(expression);