diff --git a/spm/common/sp_helpers.c b/spm/common/sp_helpers.c
index cccaf8b..5aec977 100644
--- a/spm/common/sp_helpers.c
+++ b/spm/common/sp_helpers.c
@@ -55,17 +55,15 @@
 	INFO("Test \"%s\" passed.\n", test_desc);
 }
 
-void sp_sleep(uint32_t duration_sec)
+void sp_sleep(uint32_t ms)
 {
-	uint32_t timer_freq = mmio_read_32(SYS_CNT_CONTROL_BASE + CNTFID_OFF);
-	VERBOSE("%s: Timer frequency = %u\n", __func__, timer_freq);
+	uint64_t timer_freq = mmio_read_32(SYS_CNT_CONTROL_BASE + CNTFID_OFF);
+	VERBOSE("%s: Timer frequency = %llu\n", __func__, timer_freq);
 
-	INFO("%s: Sleeping for %u seconds...\n", __func__, duration_sec);
+	VERBOSE("%s: Sleeping for %u milliseconds...\n", __func__, ms);
 	uint64_t time1 = mmio_read_64(SYS_CNT_READ_BASE);
 	volatile uint64_t time2 = time1;
-	while ((time2 - time1) < duration_sec * timer_freq) {
+	while ((time2 - time1) < ((ms * timer_freq) / 1000U)) {
 		time2 = mmio_read_64(SYS_CNT_READ_BASE);
 	}
-
-	INFO("%s: Done\n", __func__);
 }