diff --git a/Source/Core/Core/DSP/Interpreter/DSPIntMultiplier.cpp b/Source/Core/Core/DSP/Interpreter/DSPIntMultiplier.cpp
index e12cf07ab1..5d0e0a369c 100644
--- a/Source/Core/Core/DSP/Interpreter/DSPIntMultiplier.cpp
+++ b/Source/Core/Core/DSP/Interpreter/DSPIntMultiplier.cpp
@@ -372,7 +372,6 @@ void Interpreter::mulcac(const UDSPInstruction opc)
 // Multiply mid part of accumulator register $acS.m by high part $axT.h of
 // secondary accumulator $axT  (treat them both as signed). Move product
 // register before multiplication to accumulator $acR.
-// possible mistake in duddie's doc axT.h rather than axS.h
 //
 // flags out: --xx xx0x
 void Interpreter::mulcmv(const UDSPInstruction opc)
@@ -395,7 +394,6 @@ void Interpreter::mulcmv(const UDSPInstruction opc)
 
 // MULCMVZ $acS.m, $axT.h, $acR
 // 110s	t01r xxxx xxxx
-// (fixed possible bug in duddie's description, s->t)
 // Multiply mid part of accumulator register $acS.m by high part $axT.h of
 // secondary accumulator $axT  (treat them both as signed). Move product
 // register before multiplication to accumulator $acR, set (round) low part of
diff --git a/Source/Core/Core/DSP/Jit/x64/DSPJitMultiplier.cpp b/Source/Core/Core/DSP/Jit/x64/DSPJitMultiplier.cpp
index 4b7db14823..41e0548146 100644
--- a/Source/Core/Core/DSP/Jit/x64/DSPJitMultiplier.cpp
+++ b/Source/Core/Core/DSP/Jit/x64/DSPJitMultiplier.cpp
@@ -586,7 +586,6 @@ void DSPEmitter::mulcac(const UDSPInstruction opc)
 // Multiply mid part of accumulator register $acS.m by high part $axT.h of
 // secondary accumulator $axT  (treat them both as signed). Move product
 // register before multiplication to accumulator $acR.
-// possible mistake in duddie's doc axT.h rather than axS.h
 
 // flags out: --xx xx0x
 void DSPEmitter::mulcmv(const UDSPInstruction opc)
@@ -618,7 +617,6 @@ void DSPEmitter::mulcmv(const UDSPInstruction opc)
 
 // MULCMVZ $acS.m, $axT.h, $acR
 // 110s	t01r xxxx xxxx
-// (fixed possible bug in duddie's description, s->t)
 // Multiply mid part of accumulator register $acS.m by high part $axT.h of
 // secondary accumulator $axT  (treat them both as signed). Move product
 // register before multiplication to accumulator $acR, set (round) low part of
diff --git a/docs/DSP/GameCube_DSP_Users_Manual/GameCube_DSP_Users_Manual.tex b/docs/DSP/GameCube_DSP_Users_Manual/GameCube_DSP_Users_Manual.tex
index 28a05b9e27..85530f543b 100644
--- a/docs/DSP/GameCube_DSP_Users_Manual/GameCube_DSP_Users_Manual.tex
+++ b/docs/DSP/GameCube_DSP_Users_Manual/GameCube_DSP_Users_Manual.tex
@@ -3279,14 +3279,14 @@ A ``-'' indicates that the flag retains its previous value, a ``0'' indicates th
   \end{DSPOpcodeFormat}
 
   \begin{DSPOpcodeDescription}
-    \item Multiply mid part of accumulator register \Register{\$acS.m} by high part \Register{\$axS.h} of
-          secondary accumulator \Register{\$axS} (treat them both as signed).
+    \item Multiply mid part of accumulator register \Register{\$acS.m} by high part \Register{\$axT.h} of
+          secondary accumulator \Register{\$axT} (treat them both as signed).
           Move product register before multiplication to accumulator \Register{\$acR}.
   \end{DSPOpcodeDescription}
 
   \begin{DSPOpcodeOperation}
     temp = $prod
-    $prod = $acS.m * $axS.h
+    $prod = $acS.m * $axT.h
     $acR = temp
     $pc++
   \end{DSPOpcodeOperation}
@@ -3308,15 +3308,15 @@ A ``-'' indicates that the flag retains its previous value, a ``0'' indicates th
   \end{DSPOpcodeFormat}
 
   \begin{DSPOpcodeDescription}
-    \item Multiply mid part of accumulator register \Register{\$acS.m} by high part \Register{\$axS.h} of
-          secondary accumulator \Register{\$axS} (treat them both as signed).
+    \item Multiply mid part of accumulator register \Register{\$acS.m} by high part \Register{\$aTS.h} of
+          secondary accumulator \Register{\$axT} (treat them both as signed).
           Move product register before multiplication to accumulator \Register{\$acR}.
           Set low part of accumulator \Register{\$acR.l} to zero.
   \end{DSPOpcodeDescription}
 
   \begin{DSPOpcodeOperation}
     temp = $prod
-    $prod = $acS.m * $axS.h
+    $prod = $acS.m * $axT.h
     $acR.hm = temp.hm
     $acR.l = 0
     $pc++