diff --git a/common/xpfloat.h b/common/xpfloat.h
index e7eb715335c..2d0c0b97a99 100644
--- a/common/xpfloat.h
+++ b/common/xpfloat.h
@@ -43,7 +43,6 @@ struct XPFloat {
 
 	XPFloat();
 	XPFloat(uint16 signAndExponent, uint64 mantissa);
-	XPFloat(const XPFloat &other);
 
 	static XPFloat fromDouble(double value, Semantics semantics = kSemanticsMC68881);
 	static XPFloat fromDoubleBits(uint64 value, Semantics semantics = kSemanticsMC68881);
@@ -57,7 +56,6 @@ struct XPFloat {
 
 inline XPFloat::XPFloat() : signAndExponent(0), mantissa(0) {}
 inline XPFloat::XPFloat(uint16 fSignAndExponent, uint64 fMantissa) : signAndExponent(fSignAndExponent), mantissa(fMantissa) {}
-inline XPFloat::XPFloat(const XPFloat &other) : signAndExponent(other.signAndExponent), mantissa(other.mantissa) {}
 
 }