diff --git a/src/Makefile b/src/Makefile
index 0379b1b2d..4ab7869e1 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -44,14 +44,17 @@ endif
 endif
 endif
 
+USEASM?=true
 # Do we use our assembly spinlock?
 ifeq ($(uname_S),Linux)
 ifneq ($(@@),32bit)
+ifeq ($(USEASM),true)
 	ASM_OBJ+= fastlock_x64.o
 	CFLAGS+= -DASM_SPINLOCK
 	CXXFLAGS+= -DASM_SPINLOCK
 endif
 endif
+endif
 
 # To get ARM stack traces if Redis crashes we need a special C flag.
 ifneq (,$(filter aarch64 armv,$(uname_M)))