diff --git a/Source/Core/Core/PowerPC/Jit64Common/Jit64AsmCommon.cpp b/Source/Core/Core/PowerPC/Jit64Common/Jit64AsmCommon.cpp
index 81b4b27204..70224162f0 100644
--- a/Source/Core/Core/PowerPC/Jit64Common/Jit64AsmCommon.cpp
+++ b/Source/Core/Core/PowerPC/Jit64Common/Jit64AsmCommon.cpp
@@ -101,8 +101,8 @@ void CommonAsmRoutines::GenFrsqrte()
   MOVQ_xmm(XMM0, R(RSCRATCH));
   RET();
   SetJumpTarget(inf);
-  BT(64, R(RSCRATCH), Imm8(63));
-  FixupBranch negative = J_CC(CC_C);
+  TEST(64, R(RSCRATCH), R(RSCRATCH));
+  FixupBranch negative = J_CC(CC_S);
   XORPD(XMM0, R(XMM0));
   RET();