diff --git a/drivers/gles3/shaders/effect_blur.glsl b/drivers/gles3/shaders/effect_blur.glsl
index b5f98a12445..c8567b4d538 100644
--- a/drivers/gles3/shaders/effect_blur.glsl
+++ b/drivers/gles3/shaders/effect_blur.glsl
@@ -214,7 +214,7 @@ void main() {
 
 	vec4 color_accum = vec4(0.0);
 
-	float max_accum=0;
+	float max_accum=0.0;
 
 	for(int i=0;i<dof_kernel_size;i++) {