diff --git a/modules/juce_opengl/geometry/juce_Matrix3D.h b/modules/juce_opengl/geometry/juce_Matrix3D.h
index e78ac8e84f..6628330a3b 100644
--- a/modules/juce_opengl/geometry/juce_Matrix3D.h
+++ b/modules/juce_opengl/geometry/juce_Matrix3D.h
@@ -113,22 +113,22 @@ public:
     {
         const Type* const m2 = other.mat;
 
-        return Matrix3D (mat[0] * m2[0]  + mat[4] * m2[1]  + mat[8]  * m2[2]  + mat[12] * m2[3],
-                         mat[1] * m2[0]  + mat[5] * m2[1]  + mat[9]  * m2[2]  + mat[13] * m2[3],
-                         mat[2] * m2[0]  + mat[6] * m2[1]  + mat[10] * m2[2]  + mat[14] * m2[3],
-                         mat[3] * m2[0]  + mat[7] * m2[1]  + mat[11] * m2[2]  + mat[15] * m2[3],
-                         mat[0] * m2[4]  + mat[4] * m2[5]  + mat[8]  * m2[6]  + mat[12] * m2[7],
-                         mat[1] * m2[4]  + mat[5] * m2[5]  + mat[9]  * m2[6]  + mat[13] * m2[7],
-                         mat[2] * m2[4]  + mat[6] * m2[5]  + mat[10] * m2[6]  + mat[14] * m2[7],
-                         mat[3] * m2[4]  + mat[7] * m2[5]  + mat[11] * m2[6]  + mat[15] * m2[7],
-                         mat[0] * m2[8]  + mat[4] * m2[9]  + mat[8]  * m2[10] + mat[12] * m2[11],
-                         mat[1] * m2[8]  + mat[5] * m2[9]  + mat[9]  * m2[10] + mat[13] * m2[11],
-                         mat[2] * m2[8]  + mat[6] * m2[9]  + mat[10] * m2[10] + mat[14] * m2[11],
-                         mat[3] * m2[8]  + mat[7] * m2[9]  + mat[11] * m2[10] + mat[15] * m2[11],
-                         mat[0] * m2[12] + mat[4] * m2[13] + mat[8]  * m2[14] + mat[12] * m2[15],
-                         mat[1] * m2[12] + mat[5] * m2[13] + mat[9]  * m2[14] + mat[13] * m2[15],
-                         mat[2] * m2[12] + mat[6] * m2[13] + mat[10] * m2[14] + mat[14] * m2[15],
-                         mat[3] * m2[12] + mat[7] * m2[13] + mat[11] * m2[14] + mat[15] * m2[15]);
+        return Matrix3D (mat[0]  * m2[0] + mat[1]  * m2[4] + mat[2]  * m2[8]  + mat[3]  * m2[12],
+                         mat[0]  * m2[1] + mat[1]  * m2[5] + mat[2]  * m2[9]  + mat[3]  * m2[13],
+                         mat[0]  * m2[2] + mat[1]  * m2[6] + mat[2]  * m2[10] + mat[3]  * m2[14],
+                         mat[0]  * m2[3] + mat[1]  * m2[7] + mat[2]  * m2[11] + mat[3]  * m2[15],
+                         mat[4]  * m2[0] + mat[5]  * m2[4] + mat[6]  * m2[8]  + mat[7]  * m2[12],
+                         mat[4]  * m2[1] + mat[5]  * m2[5] + mat[6]  * m2[9]  + mat[7]  * m2[13],
+                         mat[4]  * m2[2] + mat[5]  * m2[6] + mat[6]  * m2[10] + mat[7]  * m2[14],
+                         mat[4]  * m2[3] + mat[5]  * m2[7] + mat[6]  * m2[11] + mat[7]  * m2[15],
+                         mat[8]  * m2[0] + mat[9]  * m2[4] + mat[10] * m2[8]  + mat[11] * m2[12],
+                         mat[8]  * m2[1] + mat[9]  * m2[5] + mat[10] * m2[9]  + mat[11] * m2[13],
+                         mat[8]  * m2[2] + mat[9]  * m2[6] + mat[10] * m2[10] + mat[11] * m2[14],
+                         mat[8]  * m2[3] + mat[9]  * m2[7] + mat[10] * m2[11] + mat[11] * m2[15],
+                         mat[12] * m2[0] + mat[13] * m2[4] + mat[14] * m2[8]  + mat[15] * m2[12],
+                         mat[12] * m2[1] + mat[13] * m2[5] + mat[14] * m2[9]  + mat[15] * m2[13],
+                         mat[12] * m2[2] + mat[13] * m2[6] + mat[14] * m2[10] + mat[15] * m2[14],
+                         mat[12] * m2[3] + mat[13] * m2[7] + mat[14] * m2[11] + mat[15] * m2[15]);
     }
 
     /** Returns a copy of this matrix after rotation through the Y, X and then Z angles