diff --git a/11/2d-gnoise.frag b/11/2d-gnoise.frag
index 1dcdadb..71b4d29 100644
--- a/11/2d-gnoise.frag
+++ b/11/2d-gnoise.frag
@@ -12,8 +12,8 @@ vec2 random2(vec2 st){
     return -1.0 + 2.0*fract(sin(st)*43758.5453123);
 }
 
-// Value Noise by Inigo Quilez - iq/2013
-// https://www.shadertoy.com/view/lsf3WH
+// Gradient Noise by Inigo Quilez - iq/2013
+// https://www.shadertoy.com/view/XdXGW8
 float noise(vec2 st) {
     vec2 i = floor(st);
     vec2 f = fract(st);
diff --git a/11/circleWave-noise.frag b/11/circleWave-noise.frag
index 51acfde..da0bae9 100644
--- a/11/circleWave-noise.frag
+++ b/11/circleWave-noise.frag
@@ -18,8 +18,8 @@ vec2 random2(vec2 st){
     return -1.0 + 2.0*fract(sin(st)*43758.5453123);
 }
 
-// Value Noise by Inigo Quilez - iq/2013
-// https://www.shadertoy.com/view/lsf3WH
+// Gradient Noise by Inigo Quilez - iq/2013
+// https://www.shadertoy.com/view/XdXGW8
 float noise(vec2 st) {
     vec2 i = floor(st);
     vec2 f = fract(st);
diff --git a/11/splatter.frag b/11/splatter.frag
index 86a9bb3..d19eabd 100644
--- a/11/splatter.frag
+++ b/11/splatter.frag
@@ -12,8 +12,8 @@ vec2 random2(vec2 st){
     return -1.0 + 2.0*fract(sin(st)*43758.5453123);
 }
 
-// Value Noise by Inigo Quilez - iq/2013
-// https://www.shadertoy.com/view/lsf3WH
+// Gradient Noise by Inigo Quilez - iq/2013
+// https://www.shadertoy.com/view/XdXGW8
 float noise(vec2 st) {
     vec2 i = floor(st);
     vec2 f = fract(st);
diff --git a/11/tmp/warp-grid.frag b/11/tmp/warp-grid.frag
index 29b3d8a..175787c 100644
--- a/11/tmp/warp-grid.frag
+++ b/11/tmp/warp-grid.frag
@@ -12,8 +12,8 @@ vec2 random2(vec2 st){
     return -1.0 + 2.0*fract(sin(st)*43758.5453123);
 }
 
-// Value Noise by Inigo Quilez - iq/2013
-// https://www.shadertoy.com/view/lsf3WH
+// Gradient Noise by Inigo Quilez - iq/2013
+// https://www.shadertoy.com/view/XdXGW8
 float noise(vec2 st) {
     vec2 i = floor(st);
     vec2 f = fract(st);