diff --git a/src/graphics/shader/recompiler/frontend/translate/Integer.cpp b/src/graphics/shader/recompiler/frontend/translate/Integer.cpp
index 0a69f9e4c..fa37f84c1 100644
--- a/src/graphics/shader/recompiler/frontend/translate/Integer.cpp
+++ b/src/graphics/shader/recompiler/frontend/translate/Integer.cpp
@@ -327,8 +327,7 @@ void Translator::V_BCNT_U32_B32(const Decoder::Instruction& inst) {
 void Translator::V_MBCNT_U32_B32(const Decoder::Instruction& inst, bool low) {
 	const auto lane  = IR::U32(ir.Emit(IR::ValueOpcode::LaneId));
 	const auto local = ir.BitwiseAnd(lane, IR::U32(IR::Value(31u)));
-	const auto below =
-	    ir.ISub(ir.ShiftLeftLogical(IR::U32(IR::Value(1u)), local), IR::U32(IR::Value(1u)));
+	const auto below = RightMask32(local);
 	const auto high_lane =
 	    IR::U1(ir.Emit(IR::ValueOpcode::UGreaterThanEqual32, {lane, IR::Value(32u)}));
 	const auto thread_mask = low ? ir.Select(high_lane, IR::U32(IR::Value(0xffffffffu)), below)