diff --git a/src/Humanizer.Tests.Shared/InflectorTests.cs b/src/Humanizer.Tests.Shared/InflectorTests.cs
index a4218c67d..61e64a89e 100644
--- a/src/Humanizer.Tests.Shared/InflectorTests.cs
+++ b/src/Humanizer.Tests.Shared/InflectorTests.cs
@@ -280,6 +280,7 @@ public IEnumerator<object[]> GetEnumerator()
             yield return new object[] { "alumna", "alumnae" };
             yield return new object[] { "alumnus", "alumni" };
             yield return new object[] { "fungus", "fungi" };
+
             yield return new object[] { "water", "water" };
             yield return new object[] { "waters", "waters" };
             yield return new object[] { "semen", "semen" };
@@ -377,11 +378,18 @@ public IEnumerator<object[]> GetEnumerator()
             yield return new object[] { "hoe", "hoes" };
             yield return new object[] { "toe", "toes" };
             yield return new object[] { "woe", "woes" };
-            // Duplicated test case - Already added by Bas Jansen
-            // yield return new object[] { "potato", "potatoes" };
 
-            //Issue 1132
+            //Issue #1132
             yield return new object[] { "metadata", "metadata" };
+
+            //Issue #1154
+            yield return new object[] { "a", "as" };
+            yield return new object[] { "A", "As" };
+            yield return new object[] { "s", "ss" };
+            yield return new object[] { "S", "Ss" };
+            yield return new object[] { "z", "zs" };
+            yield return new object[] { "Z", "Zs" };
+            yield return new object[] { "1", "1s" };
         }
 
         IEnumerator IEnumerable.GetEnumerator()