diff --git a/benchmarks/benchmark.cpp b/benchmarks/benchmark.cpp
index 3af39c4..1ca7599 100644
--- a/benchmarks/benchmark.cpp
+++ b/benchmarks/benchmark.cpp
@@ -2,7 +2,6 @@
 #define FASTFLOAT_ONLY_POSITIVE_C_NUMBER_WO_INF_NAN
 #define FASTFLOAT_ONLY_ROUNDS_TO_NEAREST_SUPPORTED
 #define FASTFLOAT_ISNOT_CHECKED_BOUNDS
-#define FASTFLOAT_X86_SIMD 42 // current maximum for test.
 
 #if defined(__linux__) || (__APPLE__ && __aarch64__)
 #define USING_COUNTERS