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-rw-r--r--src/tests/line-sample.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/tests/line-sample.c b/src/tests/line-sample.c
index d577d239..ae5e056e 100644
--- a/src/tests/line-sample.c
+++ b/src/tests/line-sample.c
@@ -11,6 +11,7 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <GL/glew.h> // just for GL_ALIASED_LINE_WIDTH_RANGE
#include "glut_wrap.h"