diff --git a/lib/libsys/arch/earm/frclock_util.c b/lib/libsys/arch/earm/frclock_util.c
index c32b50151..e4e5a78b1 100644
--- a/lib/libsys/arch/earm/frclock_util.c
+++ b/lib/libsys/arch/earm/frclock_util.c
@@ -50,7 +50,7 @@ micro_delay(u32_t micros)
 
 u32_t frclock_64_to_micros(u64_t tsc)
 {
-        return (u32_t) tsc / (_minix_kerninfo->minix_arm_frclock_hz / MICROHZ);
+        return (u32_t) (tsc / (_minix_kerninfo->minix_arm_frclock_hz / MICROHZ));
 }
 
 void