diff --git a/src/Humanizer.Tests.Shared/InflectorTests.cs b/src/Humanizer.Tests.Shared/InflectorTests.cs
index 998d42044..cf98847ed 100644
--- a/src/Humanizer.Tests.Shared/InflectorTests.cs
+++ b/src/Humanizer.Tests.Shared/InflectorTests.cs
@@ -306,7 +306,6 @@ public IEnumerator<object[]> GetEnumerator()
 
             yield return new object[] { "addendum", "addenda" };
             yield return new object[] { "alga", "algae" };
-            yield return new object[] { "apparatus", "apparatuses" };
             yield return new object[] { "appendix", "appendices" };
             yield return new object[] { "bias", "biases" };
             yield return new object[] { "bison", "bison" };
@@ -402,6 +401,18 @@ public IEnumerator<object[]> GetEnumerator()
             yield return new object[] { "z", "zs" };
             yield return new object[] { "Z", "Zs" };
             yield return new object[] { "1", "1s" };
+
+            //Issue #1252
+            yield return new object[] { "pliers", "pliers" };
+            yield return new object[] { "sheers", "sheers" };
+            yield return new object[] { "valve", "valves" };
+            yield return new object[] { "clothes", "clothes" };
+            yield return new object[] { "lens", "lenses" };
+            yield return new object[] { "apparatus", "apparatus" };
+            yield return new object[] { "clove", "cloves" };
+            yield return new object[] { "chassis", "chassis" };
+            yield return new object[] { "explosive", "explosives" };
+            yield return new object[] { "debris", "debris" };
         }
 
         IEnumerator IEnumerable.GetEnumerator()
diff --git a/src/Humanizer/Inflections/Vocabularies.cs b/src/Humanizer/Inflections/Vocabularies.cs
index 84294c8ef..d2e6b97dd 100644
--- a/src/Humanizer/Inflections/Vocabularies.cs
+++ b/src/Humanizer/Inflections/Vocabularies.cs
@@ -95,6 +95,10 @@ private static Vocabulary BuildDefault()
             _default.AddIrregular("bus", "buses", matchEnding: false);
             _default.AddIrregular("die", "dice", matchEnding: false);
             _default.AddIrregular("tie", "ties", matchEnding: false);
+            _default.AddIrregular("lens", "lenses");
+            _default.AddIrregular("clove", "cloves");
+            _default.AddIrregular("valve", "valves");
+            _default.AddIrregular("explosive", "explosives");
 
             _default.AddUncountable("staff");
             _default.AddUncountable("training");
@@ -137,6 +141,12 @@ private static Vocabulary BuildDefault()
             _default.AddUncountable("scissors");
             _default.AddUncountable("means");
             _default.AddUncountable("mail");
+            _default.AddUncountable("pliers");
+            _default.AddUncountable("sheers");
+            _default.AddUncountable("clothes");
+            _default.AddUncountable("apparatus");
+            _default.AddUncountable("chassis");
+            _default.AddUncountable("debris");
 
             //Fix 1132
             _default.AddUncountable("metadata");