diff --git a/src/Humanizer.Tests.Shared/MetricNumeralTests.cs b/src/Humanizer.Tests.Shared/MetricNumeralTests.cs
index 252a753d2..386e5fcf5 100644
--- a/src/Humanizer.Tests.Shared/MetricNumeralTests.cs
+++ b/src/Humanizer.Tests.Shared/MetricNumeralTests.cs
@@ -101,8 +101,9 @@ public void TestAllSymbolsAsInt(int exponent)
         [InlineData("12.34k", 12345, false, true, 2)]
         [InlineData("12k", 12345, false, true, 0)]
         [InlineData("-3.9m", -3.91e-3, false, true, 1)]
+        [InlineData("10 ", 10, true, false, 0)]
         public void ToMetric(string expected, double input, bool hasSpace, bool useSymbol, int? decimals)
-        {
+        {      
             Assert.Equal(expected, input.ToMetric(hasSpace, useSymbol, decimals));
         }
 
diff --git a/src/Humanizer/MetricNumeralExtensions.cs b/src/Humanizer/MetricNumeralExtensions.cs
index 5ce9a3e2d..5f8609637 100644
--- a/src/Humanizer/MetricNumeralExtensions.cs
+++ b/src/Humanizer/MetricNumeralExtensions.cs
@@ -221,9 +221,12 @@ private static string ReplaceNameBySymbol(string input)
         private static string BuildRepresentation(double input, bool hasSpace, bool useSymbol, int? decimals)
         {
             var exponent = (int)Math.Floor(Math.Log10(Math.Abs(input)) / 3);
-            return exponent.Equals(0)
-                ? input.ToString()
-                : BuildMetricRepresentation(input, exponent, hasSpace, useSymbol, decimals);
+
+            if (exponent.Equals(0))
+            {
+                return hasSpace ? string.Concat(input, " ") : input.ToString();
+            }
+            return BuildMetricRepresentation(input, exponent, hasSpace, useSymbol, decimals);
         }
 
         /// <summary>