diff --git a/MvsSln/Core/ConfigItem.cs b/MvsSln/Core/ConfigItem.cs
index b80ca35..9d3e3e5 100644
--- a/MvsSln/Core/ConfigItem.cs
+++ b/MvsSln/Core/ConfigItem.cs
@@ -171,17 +171,16 @@ public ConfigItem(string configuration, string platform)
 
         public ConfigItem(string formatted)
         {
-            if(String.IsNullOrWhiteSpace(formatted)) {
+            if(formatted == null) {
                 return;
             }
 
             string[] cfg = formatted.Split('|');
-            if(cfg.Length < 2) {
-                throw new ArgumentException($"The format `{formatted}` of configuration is not supported.");
-            }
 
-            Configuration   = cfg[0];
-            Platform        = cfg[1];
+            Configuration = cfg[0];
+
+            // < 2 https://github.com/3F/MvsSln/issues/19
+            Platform = cfg.Length < 2 ? string.Empty : cfg[1];
         }
 
         protected virtual string Sensitivity(string name)
diff --git a/MvsSlnTest/Core/ConfigItemTest.cs b/MvsSlnTest/Core/ConfigItemTest.cs
index 977adf6..f5c4c70 100644
--- a/MvsSlnTest/Core/ConfigItemTest.cs
+++ b/MvsSlnTest/Core/ConfigItemTest.cs
@@ -82,5 +82,43 @@ public void IsEqualByRuleTest1()
             Assert.AreEqual(false, target.IsEqualByRule(null, null, false));
             Assert.AreEqual(false, target.IsEqualByRule(null, null, true));
         }
+
+        [TestMethod]
+        public void NoPlatformTest1()
+        {
+            var target = new ConfigItem("Config");
+
+            Assert.AreEqual("Config", target.Configuration);
+            Assert.AreEqual(string.Empty, target.Platform);
+
+            target = new ConfigItem("Config|");
+
+            Assert.AreEqual("Config", target.Configuration);
+            Assert.AreEqual(string.Empty, target.Platform);
+
+            target = new ConfigItem("Config| ");
+
+            Assert.AreEqual("Config", target.Configuration);
+            Assert.AreEqual(" ", target.Platform);
+        }
+
+        [TestMethod]
+        public void CtorTest1()
+        {
+            var target = new ConfigItem("");
+
+            Assert.AreEqual(string.Empty, target.Configuration);
+            Assert.AreEqual(string.Empty, target.Platform);
+
+            target = new ConfigItem(" ");
+
+            Assert.AreEqual(" ", target.Configuration);
+            Assert.AreEqual(string.Empty, target.Platform);
+
+            target = new ConfigItem(null);
+
+            Assert.AreEqual(null, target.Configuration);
+            Assert.AreEqual(null, target.Platform);
+        }
     }
 }