diff --git a/Source/Core/Core/DSP/DSPDisassembler.cpp b/Source/Core/Core/DSP/DSPDisassembler.cpp
index 91f9b8f593..6e833cdf16 100644
--- a/Source/Core/Core/DSP/DSPDisassembler.cpp
+++ b/Source/Core/Core/DSP/DSPDisassembler.cpp
@@ -108,7 +108,7 @@ std::string DSPDisassembler::DisassembleParameters(const DSPOPCTemplate& opc, u1
         {
           // Left and right shifts function essentially as a single shift by a 7-bit signed value,
           // but are split into two intructions for clarity.
-          buf += fmt::format("#{}", (val & 0x20) != 0 ? (64 - val) : val);
+          buf += fmt::format("#{}", (val & 0x20) != 0 ? (int(val) - 64) : int(val));
         }
         else
         {