diff --git a/resources/shaders/140/printbed.fs b/resources/shaders/140/printbed.fs
index 86edd0daf4..6d927a749c 100644
--- a/resources/shaders/140/printbed.fs
+++ b/resources/shaders/140/printbed.fs
@@ -3,16 +3,17 @@
 const vec3 back_color_dark  = vec3(0.235, 0.235, 0.235);
 const vec3 back_color_light = vec3(0.365, 0.365, 0.365);
 
-uniform sampler2D texture;
+uniform sampler2D in_texture;
 uniform bool transparent_background;
 uniform bool svg_source;
 
 in vec2 tex_coord;
+out vec4 frag_color;
 
 vec4 svg_color()
 {
     // takes foreground from texture
-    vec4 fore_color = texture(texture, tex_coord);
+    vec4 fore_color = texture(in_texture, tex_coord);
 
     // calculates radial gradient
     vec3 back_color = vec3(mix(back_color_light, back_color_dark, smoothstep(0.0, 0.5, length(abs(tex_coord.xy) - vec2(0.5)))));
@@ -24,11 +25,11 @@ vec4 svg_color()
 vec4 non_svg_color()
 {
     // takes foreground from texture
-    vec4 color = texture(texture, tex_coord);
+    vec4 color = texture(in_texture, tex_coord);
     return vec4(color.rgb, transparent_background ? color.a * 0.25 : color.a);
 }
 
 void main()
 {
-    gl_FragColor = svg_source ? svg_color() : non_svg_color();
+    frag_color = svg_source ? svg_color() : non_svg_color();
 }
\ No newline at end of file
diff --git a/src/slic3r/GUI/GLShadersManager.cpp b/src/slic3r/GUI/GLShadersManager.cpp
index a01c39864a..ab8dfb3e77 100644
--- a/src/slic3r/GUI/GLShadersManager.cpp
+++ b/src/slic3r/GUI/GLShadersManager.cpp
@@ -35,7 +35,7 @@ std::pair<bool, std::string> GLShadersManager::init()
 
 #if ENABLE_LEGACY_OPENGL_REMOVAL
 #if ENABLE_GL_SHADERS_ATTRIBUTES
-    const std::string prefix = !GUI::wxGetApp().is_gl_version_greater_or_equal_to(3, 1) ? "140/" : "110/";
+    const std::string prefix = GUI::wxGetApp().is_gl_version_greater_or_equal_to(3, 1) ? "140/" : "110/";
     // imgui shader
     valid &= append_shader("imgui", { prefix + "imgui.vs", prefix + "imgui.fs" });
     // basic shader, used to render all what was previously rendered using the immediate mode