diff --git a/benchmarks/matching_benchmarks.c b/benchmarks/matching_benchmarks.c
index c98cc12..79a5f2d 100644
--- a/benchmarks/matching_benchmarks.c
+++ b/benchmarks/matching_benchmarks.c
@@ -31,9 +31,11 @@ static void matching_benchmark(const fsa_t *fsa)
 	for (int j = 0; j < LEN; ++j)
 		s[j] = CLAMP_CHAR(rand());
 
+	volatile bool match;
 	START_CLOCK();
-	fsa_accepts(fsa, s, LEN);
+	match = fsa_accepts(fsa, s, LEN);
 	STOP_CLOCK();
+	(void)match;
 }
 
 int main(void)