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-rw-r--r--examples/gl_basic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/gl_basic.c b/examples/gl_basic.c
index e2f764d..9ae877c 100644
--- a/examples/gl_basic.c
+++ b/examples/gl_basic.c
@@ -56,7 +56,7 @@ static void
error_usage(void)
{
fprintf(stderr, "usage error\n\n");
- fprintf(stderr, usage_message);
+ fprintf(stderr, "%s", usage_message);
exit(EXIT_FAILURE);
}