diff --git a/arch/xtensa/src/common/xtensa_testset.c b/arch/xtensa/src/common/xtensa_testset.c
index 94780357c5..8853c98375 100644
--- a/arch/xtensa/src/common/xtensa_testset.c
+++ b/arch/xtensa/src/common/xtensa_testset.c
@@ -57,7 +57,6 @@ static inline uint32_t xtensa_compareset(FAR volatile uint32_t *addr,
   __asm__ __volatile__
   (
     "WSR    %2, SCOMPARE1\n" /* Initialize SCOMPARE1 */
-    "ISYNC\n"                /* Wait sync */
     "S32C1I %0, %1, 0\n"     /* Store id into the lock, if the lock is the
                               * same as comparel. Otherwise, no write-access */
     : "=r"(set) : "r"(addr), "r"(compare), "0"(set)