diff --git a/Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h b/Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h
index af4bc6dd3d..d3a4487c4c 100644
--- a/Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h
+++ b/Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h
@@ -94,6 +94,13 @@ inline double ForceDouble(double d)
 	return d;
 }
 
+inline double Force25Bit(double d)
+{
+	u64 di = *(u64*)&d;
+	di = (di & 0xFFFFFFFFF8000000ULL) + (di & 0x8000000);
+	return *(double*)&di;
+}
+
 // these functions allow globally modify operations behaviour
 // also, these may be used to set flags like FR, FI, OX, UX
 
diff --git a/Source/Core/Core/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp b/Source/Core/Core/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
index d3df8716f5..f0ef426e5f 100644
--- a/Source/Core/Core/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
+++ b/Source/Core/Core/PowerPC/Interpreter/Interpreter_FloatingPoint.cpp
@@ -297,7 +297,8 @@ void Interpreter::fmulx(UGeckoInstruction _inst)
 }
 void Interpreter::fmulsx(UGeckoInstruction _inst)
 {
-	double d_value = NI_mul(rPS0(_inst.FA), rPS0(_inst.FC));
+	double c_value = Force25Bit(rPS0(_inst.FC));
+	double d_value = NI_mul(rPS0(_inst.FA), c_value);
 	rPS0(_inst.FD) = rPS1(_inst.FD) = ForceSingle(d_value);
 	//FPSCR.FI = d_value != rPS0(_inst.FD);
 	FPSCR.FI = 0;
@@ -320,7 +321,8 @@ void Interpreter::fmaddx(UGeckoInstruction _inst)
 
 void Interpreter::fmaddsx(UGeckoInstruction _inst)
 {
-	double d_value = NI_madd( rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB) );
+	double c_value = Force25Bit(rPS0(_inst.FC));
+	double d_value = NI_madd(rPS0(_inst.FA), c_value, rPS0(_inst.FB));
 	rPS0(_inst.FD) = rPS1(_inst.FD) = ForceSingle(d_value);
 	FPSCR.FI = d_value != rPS0(_inst.FD);
 	FPSCR.FR = 0;
diff --git a/Source/Core/Core/PowerPC/Interpreter/Interpreter_Paired.cpp b/Source/Core/Core/PowerPC/Interpreter/Interpreter_Paired.cpp
index bf47c351dc..0888e79042 100644
--- a/Source/Core/Core/PowerPC/Interpreter/Interpreter_Paired.cpp
+++ b/Source/Core/Core/PowerPC/Interpreter/Interpreter_Paired.cpp
@@ -264,8 +264,10 @@ void Interpreter::ps_add(UGeckoInstruction _inst)
 
 void Interpreter::ps_mul(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = ForceSingle(NI_mul(rPS0(_inst.FA), rPS0(_inst.FC)));
-	rPS1(_inst.FD) = ForceSingle(NI_mul(rPS1(_inst.FA), rPS1(_inst.FC)));
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	rPS0(_inst.FD) = ForceSingle(NI_mul(rPS0(_inst.FA), c0));
+	rPS1(_inst.FD) = ForceSingle(NI_mul(rPS1(_inst.FA), c1));
 	UpdateFPRF(rPS0(_inst.FD));
 
 	if (_inst.Rc)
@@ -275,8 +277,10 @@ void Interpreter::ps_mul(UGeckoInstruction _inst)
 
 void Interpreter::ps_msub(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = ForceSingle(NI_msub(rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB)));
-	rPS1(_inst.FD) = ForceSingle(NI_msub(rPS1(_inst.FA), rPS1(_inst.FC), rPS1(_inst.FB)));
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	rPS0(_inst.FD) = ForceSingle(NI_msub(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	rPS1(_inst.FD) = ForceSingle(NI_msub(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	UpdateFPRF(rPS0(_inst.FD));
 
 	if (_inst.Rc)
@@ -285,8 +289,10 @@ void Interpreter::ps_msub(UGeckoInstruction _inst)
 
 void Interpreter::ps_madd(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = ForceSingle(NI_madd(rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB)));
-	rPS1(_inst.FD) = ForceSingle(NI_madd(rPS1(_inst.FA), rPS1(_inst.FC), rPS1(_inst.FB)));
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	rPS0(_inst.FD) = ForceSingle(NI_madd(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	rPS1(_inst.FD) = ForceSingle(NI_madd(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	UpdateFPRF(rPS0(_inst.FD));
 
 	if (_inst.Rc)
@@ -295,8 +301,10 @@ void Interpreter::ps_madd(UGeckoInstruction _inst)
 
 void Interpreter::ps_nmsub(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = ForceSingle( -NI_msub( rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB) ) );
-	rPS1(_inst.FD) = ForceSingle( -NI_msub( rPS1(_inst.FA), rPS1(_inst.FC), rPS1(_inst.FB) ) );
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	rPS0(_inst.FD) = ForceSingle(-NI_msub(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	rPS1(_inst.FD) = ForceSingle(-NI_msub(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	UpdateFPRF(rPS0(_inst.FD));
 
 	if (_inst.Rc)
@@ -305,8 +313,10 @@ void Interpreter::ps_nmsub(UGeckoInstruction _inst)
 
 void Interpreter::ps_nmadd(UGeckoInstruction _inst)
 {
-	rPS0(_inst.FD) = ForceSingle( -NI_madd( rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB) ) );
-	rPS1(_inst.FD) = ForceSingle( -NI_madd( rPS1(_inst.FA), rPS1(_inst.FC), rPS1(_inst.FB) ) );
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	rPS0(_inst.FD) = ForceSingle(-NI_madd(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	rPS1(_inst.FD) = ForceSingle(-NI_madd(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	UpdateFPRF(rPS0(_inst.FD));
 
 	if (_inst.Rc)
@@ -339,8 +349,9 @@ void Interpreter::ps_sum1(UGeckoInstruction _inst)
 
 void Interpreter::ps_muls0(UGeckoInstruction _inst)
 {
-	double p0 = ForceSingle(NI_mul(rPS0(_inst.FA), rPS0(_inst.FC)));
-	double p1 = ForceSingle(NI_mul(rPS1(_inst.FA), rPS0(_inst.FC)));
+	double c0 = Force25Bit(rPS1(_inst.FC));
+	double p0 = ForceSingle(NI_mul(rPS0(_inst.FA), c0));
+	double p1 = ForceSingle(NI_mul(rPS1(_inst.FA), c0));
 	rPS0(_inst.FD) = p0;
 	rPS1(_inst.FD) = p1;
 	UpdateFPRF(rPS0(_inst.FD));
@@ -351,8 +362,9 @@ void Interpreter::ps_muls0(UGeckoInstruction _inst)
 
 void Interpreter::ps_muls1(UGeckoInstruction _inst)
 {
-	double p0 = ForceSingle(NI_mul(rPS0(_inst.FA), rPS1(_inst.FC)));
-	double p1 = ForceSingle(NI_mul(rPS1(_inst.FA), rPS1(_inst.FC)));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	double p0 = ForceSingle(NI_mul(rPS0(_inst.FA), c1));
+	double p1 = ForceSingle(NI_mul(rPS1(_inst.FA), c1));
 	rPS0(_inst.FD) = p0;
 	rPS1(_inst.FD) = p1;
 	UpdateFPRF(rPS0(_inst.FD));
@@ -363,8 +375,10 @@ void Interpreter::ps_muls1(UGeckoInstruction _inst)
 
 void Interpreter::ps_madds0(UGeckoInstruction _inst)
 {
-	double p0 = ForceSingle( NI_madd( rPS0(_inst.FA), rPS0(_inst.FC), rPS0(_inst.FB)) );
-	double p1 = ForceSingle( NI_madd( rPS1(_inst.FA), rPS0(_inst.FC), rPS1(_inst.FB)) );
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	double p0 = ForceSingle(NI_madd(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	double p1 = ForceSingle(NI_madd(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	rPS0(_inst.FD) = p0;
 	rPS1(_inst.FD) = p1;
 	UpdateFPRF(rPS0(_inst.FD));
@@ -375,8 +389,10 @@ void Interpreter::ps_madds0(UGeckoInstruction _inst)
 
 void Interpreter::ps_madds1(UGeckoInstruction _inst)
 {
-	double p0 = ForceSingle( NI_madd( rPS0(_inst.FA), rPS1(_inst.FC), rPS0(_inst.FB)) );
-	double p1 = ForceSingle( NI_madd( rPS1(_inst.FA), rPS1(_inst.FC), rPS1(_inst.FB)) );
+	double c0 = Force25Bit(rPS0(_inst.FC));
+	double c1 = Force25Bit(rPS1(_inst.FC));
+	double p0 = ForceSingle(NI_madd(rPS0(_inst.FA), c0, rPS0(_inst.FB)));
+	double p1 = ForceSingle(NI_madd(rPS1(_inst.FA), c1, rPS1(_inst.FB)));
 	rPS0(_inst.FD) = p0;
 	rPS1(_inst.FD) = p1;
 	UpdateFPRF(rPS0(_inst.FD));