diff --git a/README.md b/README.md
index 72ddc28..3ff884e 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'dev.romainguy:kotlin-math:1.5.2'
+    implementation 'dev.romainguy:kotlin-math:1.5.3'
 }
 ```
 
diff --git a/gradle.properties b/gradle.properties
index d8de165..f3bfe50 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 GROUP=dev.romainguy
-VERSION_NAME=1.5.2
+VERSION_NAME=1.5.3
 
 POM_DESCRIPTION=Graphics oriented math library for Kotlin
 
diff --git a/src/commonMain/kotlin/dev/romainguy/kotlin/math/Matrix.kt b/src/commonMain/kotlin/dev/romainguy/kotlin/math/Matrix.kt
index 4a0646b..53ada9d 100644
--- a/src/commonMain/kotlin/dev/romainguy/kotlin/math/Matrix.kt
+++ b/src/commonMain/kotlin/dev/romainguy/kotlin/math/Matrix.kt
@@ -775,9 +775,13 @@ fun perspective(fov: Float, ratio: Float, near: Float, far: Float): Mat4 {
 }
 
 fun ortho(l: Float, r: Float, b: Float, t: Float, n: Float, f: Float) = Mat4(
-        Float4(x = 2.0f / (r - 1.0f)),
-        Float4(y = 2.0f / (t - b)),
-        Float4(z = -2.0f / (f - n)),
-        Float4(-(r + l) / (r - l), -(t + b) / (t - b), -(f + n) / (f - n), 1.0f)
+    Float4(x = 2.0f / (r - l)),
+    Float4(y = 2.0f / (t - b)),
+    Float4(z = -2.0f / (f - n)),
+    Float4(
+        -(r + l) / (r - l),
+        -(t + b) / (t - b),
+        -(f + n) / (f - n),
+        1.0f
+    )
 )
-