diff --git a/Shaders/water.frag b/Shaders/water.frag
index d40c77b1e..43d98753a 100644
--- a/Shaders/water.frag
+++ b/Shaders/water.frag
@@ -1,3 +1,8 @@
+// This shader is mostly an adaptation of the shader found at
+//  http://www.bonzaisoftware.com/water_tut.html and its glsl conversion
+//  available at http://forum.bonzaisoftware.com/viewthread.php?tid=10
+//  © Michael Horsch - 2005
+
 uniform sampler2D water_normalmap;
 uniform sampler2D water_reflection;
 uniform sampler2D water_dudvmap;
diff --git a/Shaders/water.vert b/Shaders/water.vert
index 1f83a168f..f549071b1 100644
--- a/Shaders/water.vert
+++ b/Shaders/water.vert
@@ -1,3 +1,8 @@
+// This shader is mostly an adaptation of the shader found at
+//  http://www.bonzaisoftware.com/water_tut.html and its glsl conversion
+//  available at http://forum.bonzaisoftware.com/viewthread.php?tid=10
+//  © Michael Horsch - 2005
+
 varying vec4 waterTex1;
 varying vec4 waterTex2;
 varying vec4 waterTex4;