diff --git a/gtk/src/gtk_display_driver_opengl.cpp b/gtk/src/gtk_display_driver_opengl.cpp
index e20ffa87..3df42e59 100644
--- a/gtk/src/gtk_display_driver_opengl.cpp
+++ b/gtk/src/gtk_display_driver_opengl.cpp
@@ -61,7 +61,7 @@ static const GLchar *stock_fragment_shader_140 =
 
 "void main()\n"
 "{\n"
-"    fragcolor = texture2D(texmap, texcoord);\n"
+"    fragcolor = texture(texmap, texcoord);\n"
 "}\n";