diff --git a/include/import/slz.h b/include/import/slz.h
index 901a79027..5ff756c35 100644
--- a/include/import/slz.h
+++ b/include/import/slz.h
@@ -38,6 +38,7 @@
 #define UNALIGNED_LE_OK
 #define UNALIGNED_FASTER
 #define USE_64BIT_QUEUE
+#define HAVE_FAST_MULT
 #elif defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
 #define UNALIGNED_LE_OK
 //#define UNALIGNED_FASTER
@@ -47,6 +48,7 @@
 #elif defined(__ARM_ARCH_8A) || defined(__ARM_FEATURE_UNALIGNED)
 #define UNALIGNED_LE_OK
 #define UNALIGNED_FASTER
+#define HAVE_FAST_MULT
 #endif
 
 /* Log2 of the size of the hash table used for the references table. */
diff --git a/src/slz.c b/src/slz.c
index a41df72ae..1b0b13c57 100644
--- a/src/slz.c
+++ b/src/slz.c
@@ -388,6 +388,9 @@ static inline uint32_t slz_hash(uint32_t a)
 	// but provides a slightly smoother hash
 	__asm__ volatile("crc32l %1,%0" : "+r"(a) : "r"(0));
 	return a >> (32 - HASH_BITS);
+#elif defined(HAVE_FAST_MULT)
+	// optimal factor for HASH_BITS=12 and HASH_BITS=13 among 48k tested: 0x1af42f
+	return (a * 0x1af42f) >> (32 - HASH_BITS);
 #else
 	return ((a << 19) + (a << 6) - a) >> (32 - HASH_BITS);
 #endif