diff --git a/exercises/practice/crypto-square/.meta/tests.toml b/exercises/practice/crypto-square/.meta/tests.toml
index dd83eafb..94ef0819 100644
--- a/exercises/practice/crypto-square/.meta/tests.toml
+++ b/exercises/practice/crypto-square/.meta/tests.toml
@@ -12,6 +12,9 @@
 [407c3837-9aa7-4111-ab63-ec54b58e8e9f]
 description = "empty plaintext results in an empty ciphertext"
 
+[aad04a25-b8bb-4304-888b-581bea8e0040]
+description = "normalization results in empty plaintext"
+
 [64131d65-6fd9-4f58-bdd8-4a2370fb481d]
 description = "Lowercase"
 
@@ -29,3 +32,8 @@ description = "8 character plaintext results in 3 chunks, the last one with a tr
 
 [fbcb0c6d-4c39-4a31-83f6-c473baa6af80]
 description = "54 character plaintext results in 7 chunks, the last two with trailing spaces"
+include = false
+
+[33fd914e-fa44-445b-8f38-ff8fbc9fe6e6]
+description = "54 character plaintext results in 8 chunks, the last two with trailing spaces"
+reimplements = "fbcb0c6d-4c39-4a31-83f6-c473baa6af80"
diff --git a/exercises/practice/crypto-square/source/crypto_square.d b/exercises/practice/crypto-square/source/crypto_square.d
index 910ba177..b9f51b43 100644
--- a/exercises/practice/crypto-square/source/crypto_square.d
+++ b/exercises/practice/crypto-square/source/crypto_square.d
@@ -12,6 +12,12 @@ unittest
 
     static if (allTestsEnabled)
     {
+        // normalize_to_empty
+        {
+            auto theCipher = new Cipher("... --- ...");
+            assert("" == theCipher.normalizePlainText());
+        }
+
         // normalize_numbers
         {
             auto theCipher = new Cipher("1, 2, 3 GO!");
@@ -85,6 +91,12 @@ unittest
             auto theCipher = new Cipher("Vampires are people too!");
             assert("vrel aepe mset paoo irpo" == theCipher.normalize.cipherText());
         }
+
+        // normalized_Cipher_text3
+        {
+            auto theCipher = new Cipher("If man was meant to stay on the ground, god would have given us roots.");
+            assert("imtgdvs fearwer mayoogo anouuio ntnnlvt wttddes aohghn sseoau" == theCipher.normalize.cipherText());
+        }
     }
 
 }