diff --git a/matrix.cpp b/matrix.cpp
index dc1d5ec0..446fc354 100644
--- a/matrix.cpp
+++ b/matrix.cpp
@@ -338,6 +338,21 @@ matrix<T>::operator* (const point<4,T> &rhs) const
 }
 
 
+//-----------------------------------------------------------------------------
+template <typename T>
+matrix<T>
+matrix<T>::operator* (T f) const
+{
+    matrix<T> out;
+
+    for (size_t i = 0; i < 4; ++i)
+        for (size_t j = 0; j < 4; ++j)
+            out.values[i][j] = values[i][j] * f;
+
+    return out;
+}
+
+
 //-----------------------------------------------------------------------------
 template <typename T>
 matrix<T>&
diff --git a/matrix.hpp b/matrix.hpp
index c2740b79..348bdd9f 100644
--- a/matrix.hpp
+++ b/matrix.hpp
@@ -48,6 +48,7 @@ namespace util {
         vector<4,T> operator* (const vector<4,T>&) const;
         point<4,T>  operator* (const point<4,T> &) const;
 
+        matrix<T>  operator*  (T) const;
         matrix<T>& operator*= (T);
         matrix<T>  operator/  (T) const;
         matrix<T>& operator/= (T);