diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index 9ddad08..d1694f1 100644
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -874,7 +874,9 @@
 
 	cpu = rd->rp->lead_cpu;
 	bits = rapl_unit_xlate(rd, rp->unit, value, 1);
-	bits |= bits << rp->shift;
+	bits <<= rp->shift;
+	bits &= rp->mask;
+
 	memset(&ma, 0, sizeof(ma));
 
 	ma.msr_no = rd->msrs[rp->id];