diff --git a/Test/Flurl.Test/CommonExtensionsTests.cs b/Test/Flurl.Test/CommonExtensionsTests.cs
index 7a949bf..ff2da71 100644
--- a/Test/Flurl.Test/CommonExtensionsTests.cs
+++ b/Test/Flurl.Test/CommonExtensionsTests.cs
@@ -98,6 +98,35 @@ namespace Flurl.Test
 			Assert.Throws<ArgumentNullException>(() => obj.ToKeyValuePairs());
 		}
 
+		private class ToKvMe
+		{
+			public string Read1 { get; private set; }
+			public string Read2 { get; private set; }
+
+			private string PrivateRead1 { get; set; } = "c";
+			public string PrivateRead2 { private get; set; }
+
+			public string WriteOnly {
+				set {
+					Read1 = value.Split(',')[0];
+					Read2 = value.Split(',')[1];
+				}
+			}
+		}
+
+		[Test]
+		public void object_to_kv_ignores_props_not_publicly_readable() {
+			var kv = new ToKvMe {
+				PrivateRead2 = "foo",
+				WriteOnly = "a,b"
+			}.ToKeyValuePairs();
+
+			CollectionAssert.AreEquivalent(new Dictionary<string, object> {
+				{ "Read1", "a" },
+				{ "Read2", "b" }
+			}, kv);
+		}
+
 		[Test]
 		public void SplitOnFirstOccurence_works() {
 			var result = "hello/how/are/you".SplitOnFirstOccurence('/');
diff --git a/src/Flurl/Util/CommonExtensions.cs b/src/Flurl/Util/CommonExtensions.cs
index f6a0903..aeb0112 100644
--- a/src/Flurl/Util/CommonExtensions.cs
+++ b/src/Flurl/Util/CommonExtensions.cs
@@ -16,8 +16,10 @@ namespace Flurl.Util
 	public static class CommonExtensions
 	{
 		/// <summary>
-		/// Converts an object's public properties to a collection of string-based key-value pairs. If the object happens
-		/// to be an IDictionary, the IDictionary's keys and values converted to strings and returned.
+		/// Returns a key-value-pairs representation of the object.
+		/// For strings, URL query string format assumed and pairs are parsed from that.
+		/// For objects that already implement IEnumerable&lt;KeyValuePair&gt;, the object itself is simply returned.
+		/// For all other objects, all publicly readable properties are extracted and returned as pairs.
 		/// </summary>
 		/// <param name="obj">The object to parse into key-value pairs</param>
 		/// <returns></returns>
@@ -50,7 +52,7 @@ namespace Flurl.Util
 		}
 
 		/// <summary>
-		/// Splits at the first occurence of the given seperator.
+		/// Splits at the first occurence of the given separator.
 		/// </summary>
 		/// <param name="s">The string to split.</param>
 		/// <param name="separator">The separator to split on.</param>
@@ -74,12 +76,16 @@ namespace Flurl.Util
 		private static IEnumerable<KeyValuePair<string, object>> ObjectToKV(object obj) {
 #if NETSTANDARD1_0
 			return from prop in obj.GetType().GetRuntimeProperties()
-				let val = prop.GetValue(obj, null)
+				let getter = prop.GetMethod
+				where getter?.IsPublic == true
+				let val = getter.Invoke(obj, null)
 				select new KeyValuePair<string, object>(prop.Name, val);
 #else
-			return from prop in obj.GetType().GetProperties() 
-				   let val = prop.GetValue(obj, null)
-				   select new KeyValuePair<string, object>(prop.Name, val);
+			return from prop in obj.GetType().GetProperties()
+				let getter = prop.GetGetMethod(false)
+				where getter != null
+				let val = getter.Invoke(obj, null)
+				select new KeyValuePair<string, object>(prop.Name, val);
 #endif
 		}