diff --git a/Source/Core/Core/PowerPC/JitArm64/JitArm64_LoadStore.cpp b/Source/Core/Core/PowerPC/JitArm64/JitArm64_LoadStore.cpp
index ebcb8142b7..12c35bc43c 100644
--- a/Source/Core/Core/PowerPC/JitArm64/JitArm64_LoadStore.cpp
+++ b/Source/Core/Core/PowerPC/JitArm64/JitArm64_LoadStore.cpp
@@ -817,9 +817,8 @@ void JitArm64::dcbx(UGeckoInstruction inst)
     STR(IndexType::Unsigned, loop_counter, PPC_REG, PPCSTATE_OFF_SPR(SPR_CTR));
 
     // downcount -= (WA * reg_cycle_count)
-    MUL(WB, WA, reg_cycle_count);
+    MSUB(reg_downcount, WA, reg_cycle_count, reg_downcount);
     // ^ Note that this cannot overflow because it's limited by (downcount/cycle_count).
-    SUB(reg_downcount, reg_downcount, WB);
     STR(IndexType::Unsigned, reg_downcount, PPC_REG, PPCSTATE_OFF(downcount));
 
     SetJumpTarget(downcount_is_zero_or_negative);