diff --git a/internal/graphicsdriver/opengl/defaultshader.go b/internal/graphicsdriver/opengl/defaultshader.go
index 187cabdba..e0c0fccd0 100644
--- a/internal/graphicsdriver/opengl/defaultshader.go
+++ b/internal/graphicsdriver/opengl/defaultshader.go
@@ -109,15 +109,15 @@ func fragmentShaderStr(useColorM bool, filter driver.Filter, address driver.Addr
 const (
 	shaderStrVertex = `
 uniform vec2 viewport_size;
-attribute vec2 vertex;
-attribute vec2 tex;
-attribute vec4 color_scale;
+attribute vec2 A0;
+attribute vec2 A1;
+attribute vec4 A2;
 varying vec2 varying_tex;
 varying vec4 varying_color_scale;
 
 void main(void) {
-  varying_tex = tex;
-  varying_color_scale = color_scale;
+  varying_tex = A1;
+  varying_color_scale = A2;
 
   mat4 projection_matrix = mat4(
     vec4(2.0 / viewport_size.x, 0, 0, 0),
@@ -125,7 +125,7 @@ void main(void) {
     vec4(0, 0, 1, 0),
     vec4(-1, -1, 0, 1)
   );
-  gl_Position = projection_matrix * vec4(vertex, 0, 1);
+  gl_Position = projection_matrix * vec4(A0, 0, 1);
 }
 `
 	shaderStrFragment = `
diff --git a/internal/graphicsdriver/opengl/program.go b/internal/graphicsdriver/opengl/program.go
index 63b25c8b3..82c96c58b 100644
--- a/internal/graphicsdriver/opengl/program.go
+++ b/internal/graphicsdriver/opengl/program.go
@@ -90,15 +90,15 @@ var theArrayBufferLayout = arrayBufferLayout{
 	// Note that GL_MAX_VERTEX_ATTRIBS is at least 16.
 	parts: []arrayBufferLayoutPart{
 		{
-			name: "vertex",
+			name: "A0",
 			num:  2,
 		},
 		{
-			name: "tex",
+			name: "A1",
 			num:  2,
 		},
 		{
-			name: "color_scale",
+			name: "A2",
 			num:  4,
 		},
 	},