diff --git a/code/renderer/tr_backend_gl3.cpp b/code/renderer/tr_backend_gl3.cpp
index 496ee2e..03ed89e 100644
--- a/code/renderer/tr_backend_gl3.cpp
+++ b/code/renderer/tr_backend_gl3.cpp
@@ -286,9 +286,9 @@ static const char* generic_vs =
 "in vec2 texCoords2;\n"
 "in vec4 color;\n"
 "\n"
-"out vec2 texCoords1FS;\n"
-"out vec2 texCoords2FS;\n"
-"out vec4 colorFS;\n"
+"centroid out vec2 texCoords1FS;\n"
+"centroid out vec2 texCoords2FS;\n"
+"centroid out vec4 colorFS;\n"
 "\n"
 "void main()\n"
 "{\n"