diff --git a/src/main/java/org/apache/commons/lang3/mutable/MutableDouble.java b/src/main/java/org/apache/commons/lang3/mutable/MutableDouble.java
index b35bd4b46..4f79a3b4e 100644
--- a/src/main/java/org/apache/commons/lang3/mutable/MutableDouble.java
+++ b/src/main/java/org/apache/commons/lang3/mutable/MutableDouble.java
@@ -186,7 +186,7 @@ public class MutableDouble extends Number implements Comparable<MutableDouble>,
     }
 
     //-----------------------------------------------------------------------
-    // shortValue and bytValue rely on Number implementation
+    // shortValue and byteValue rely on Number implementation
     /**
      * Returns the value of this MutableDouble as an int.
      *
diff --git a/src/main/java/org/apache/commons/lang3/mutable/MutableFloat.java b/src/main/java/org/apache/commons/lang3/mutable/MutableFloat.java
index fb4a3a224..96bfd67c8 100644
--- a/src/main/java/org/apache/commons/lang3/mutable/MutableFloat.java
+++ b/src/main/java/org/apache/commons/lang3/mutable/MutableFloat.java
@@ -186,7 +186,7 @@ public class MutableFloat extends Number implements Comparable<MutableFloat>, Mu
     }
 
     //-----------------------------------------------------------------------
-    // shortValue and bytValue rely on Number implementation
+    // shortValue and byteValue rely on Number implementation
     /**
      * Returns the value of this MutableFloat as an int.
      *
diff --git a/src/main/java/org/apache/commons/lang3/mutable/MutableInt.java b/src/main/java/org/apache/commons/lang3/mutable/MutableInt.java
index 1d0eb53e9..5ebcaf34a 100644
--- a/src/main/java/org/apache/commons/lang3/mutable/MutableInt.java
+++ b/src/main/java/org/apache/commons/lang3/mutable/MutableInt.java
@@ -167,7 +167,7 @@ public class MutableInt extends Number implements Comparable<MutableInt>, Mutabl
     }
 
     //-----------------------------------------------------------------------
-    // shortValue and bytValue rely on Number implementation
+    // shortValue and byteValue rely on Number implementation
     /**
      * Returns the value of this MutableInt as an int.
      *
diff --git a/src/main/java/org/apache/commons/lang3/mutable/MutableLong.java b/src/main/java/org/apache/commons/lang3/mutable/MutableLong.java
index ce25f1e12..d651d931c 100644
--- a/src/main/java/org/apache/commons/lang3/mutable/MutableLong.java
+++ b/src/main/java/org/apache/commons/lang3/mutable/MutableLong.java
@@ -167,7 +167,7 @@ public class MutableLong extends Number implements Comparable<MutableLong>, Muta
     }
 
     //-----------------------------------------------------------------------
-    // shortValue and bytValue rely on Number implementation
+    // shortValue and byteValue rely on Number implementation
     /**
      * Returns the value of this MutableLong as an int.
      *
diff --git a/src/main/java/org/apache/commons/lang3/mutable/MutableShort.java b/src/main/java/org/apache/commons/lang3/mutable/MutableShort.java
index dae4fd812..2e9026b4d 100644
--- a/src/main/java/org/apache/commons/lang3/mutable/MutableShort.java
+++ b/src/main/java/org/apache/commons/lang3/mutable/MutableShort.java
@@ -167,7 +167,7 @@ public class MutableShort extends Number implements Comparable<MutableShort>, Mu
     }
 
     //-----------------------------------------------------------------------
-    // bytValue relies on Number implementation
+    // byteValue relies on Number implementation
     /**
      * Returns the value of this MutableShort as a short.
      *