diff --git a/utils/memcpy-bench/FastMemcpy.h b/utils/memcpy-bench/FastMemcpy.h
index e2ac73a1b63..650a6761771 100644
--- a/utils/memcpy-bench/FastMemcpy.h
+++ b/utils/memcpy-bench/FastMemcpy.h
@@ -654,7 +654,7 @@ __attribute__((__no_sanitize__("undefined"))) inline void *memcpy_tiny(void * __
 //---------------------------------------------------------------------
 // main routine
 //---------------------------------------------------------------------
-inline void* memcpy_fast_sse(void * __restrict destination, const void * __restrict source, size_t size)
+void* memcpy_fast_sse(void * __restrict destination, const void * __restrict source, size_t size) /// NOLINT(misc-definitions-in-headers)
 {
     unsigned char *dst = (unsigned char*)destination;
     const unsigned char *src = (const unsigned char*)source;
diff --git a/utils/memcpy-bench/FastMemcpy_Avx.h b/utils/memcpy-bench/FastMemcpy_Avx.h
index 3271e10d237..aecf8abbe03 100644
--- a/utils/memcpy-bench/FastMemcpy_Avx.h
+++ b/utils/memcpy-bench/FastMemcpy_Avx.h
@@ -371,7 +371,7 @@ static INLINE void *memcpy_tiny_avx(void * __restrict dst, const void * __restri
 //---------------------------------------------------------------------
 // main routine
 //---------------------------------------------------------------------
-inline void* memcpy_fast_avx(void * __restrict destination, const void * __restrict source, size_t size)
+void* memcpy_fast_avx(void * __restrict destination, const void * __restrict source, size_t size) /// NOLINT(misc-definitions-in-headers)
 {
     unsigned char *dst = reinterpret_cast<unsigned char*>(destination);
     const unsigned char *src = reinterpret_cast<const unsigned char*>(source);