diff --git a/src/org/joml/Matrix3dStack.java b/src/org/joml/Matrix3dStack.java
index 6cf53a60..9499ff2a 100644
--- a/src/org/joml/Matrix3dStack.java
+++ b/src/org/joml/Matrix3dStack.java
@@ -114,7 +114,7 @@ public Matrix3dStack pushMatrix() {
      */
     public Matrix3dStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix3fStack.java b/src/org/joml/Matrix3fStack.java
index 8f87540a..e78d8ed6 100644
--- a/src/org/joml/Matrix3fStack.java
+++ b/src/org/joml/Matrix3fStack.java
@@ -114,7 +114,7 @@ public Matrix3fStack pushMatrix() {
      */
     public Matrix3fStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix3x2dStack.java b/src/org/joml/Matrix3x2dStack.java
index cffb2848..bcb30e63 100644
--- a/src/org/joml/Matrix3x2dStack.java
+++ b/src/org/joml/Matrix3x2dStack.java
@@ -114,7 +114,7 @@ public Matrix3x2dStack pushMatrix() {
      */
     public Matrix3x2dStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix3x2fStack.java b/src/org/joml/Matrix3x2fStack.java
index abe3f93a..0d93973a 100644
--- a/src/org/joml/Matrix3x2fStack.java
+++ b/src/org/joml/Matrix3x2fStack.java
@@ -114,7 +114,7 @@ public Matrix3x2fStack pushMatrix() {
      */
     public Matrix3x2fStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix4dStack.java b/src/org/joml/Matrix4dStack.java
index 62caafec..fe64453d 100644
--- a/src/org/joml/Matrix4dStack.java
+++ b/src/org/joml/Matrix4dStack.java
@@ -113,7 +113,7 @@ public Matrix4dStack pushMatrix() {
      */
     public Matrix4dStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix4fStack.java b/src/org/joml/Matrix4fStack.java
index 930551f1..532c6f28 100644
--- a/src/org/joml/Matrix4fStack.java
+++ b/src/org/joml/Matrix4fStack.java
@@ -113,7 +113,7 @@ public Matrix4fStack pushMatrix() {
      */
     public Matrix4fStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix4x3dStack.java b/src/org/joml/Matrix4x3dStack.java
index 5dbaed50..b4657953 100644
--- a/src/org/joml/Matrix4x3dStack.java
+++ b/src/org/joml/Matrix4x3dStack.java
@@ -114,7 +114,7 @@ public Matrix4x3dStack pushMatrix() {
      */
     public Matrix4x3dStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;
diff --git a/src/org/joml/Matrix4x3fStack.java b/src/org/joml/Matrix4x3fStack.java
index 04c80db7..481a258c 100644
--- a/src/org/joml/Matrix4x3fStack.java
+++ b/src/org/joml/Matrix4x3fStack.java
@@ -114,7 +114,7 @@ public Matrix4x3fStack pushMatrix() {
      */
     public Matrix4x3fStack popMatrix() {
         if (curr == 0) {
-            throw new IllegalStateException("already at the buttom of the stack"); //$NON-NLS-1$
+            throw new IllegalStateException("already at the bottom of the stack"); //$NON-NLS-1$
         }
         set(mats[--curr]);
         return this;