diff --git a/resources/shaders/gl3/filter_blur.fs.glsl b/resources/shaders/gl3/filter_blur.fs.glsl
index d089fd30..dca9e4d1 100644
--- a/resources/shaders/gl3/filter_blur.fs.glsl
+++ b/resources/shaders/gl3/filter_blur.fs.glsl
@@ -24,8 +24,6 @@
 
 precision highp float;
 
-
-
 uniform sampler2D uSrc;
 uniform vec2 uSrcOffsetScale;
 uniform vec3 uInitialGaussCoeff;
diff --git a/shaders/filter_blur.fs.glsl b/shaders/filter_blur.fs.glsl
index dccc353c..eb45bf4b 100644
--- a/shaders/filter_blur.fs.glsl
+++ b/shaders/filter_blur.fs.glsl
@@ -22,8 +22,6 @@
 
 precision highp float;
 
-#define SQRT_PI_2_INV   2.5066282746310002
-
 uniform sampler2D uSrc;
 uniform vec2 uSrcOffsetScale;
 uniform vec3 uInitialGaussCoeff;