diff --git a/src/math/quantity.cpp b/src/math/quantity.cpp
index df13f3ff..a9b9f919 100644
--- a/src/math/quantity.cpp
+++ b/src/math/quantity.cpp
@@ -97,21 +97,11 @@ bool operator!=(const Quantity& l, const Quantity& r)
return true;
}
-Quantity operator*(const HNumber& l, const Quantity& r)
-{
- return r * l;
-}
-
Quantity operator*(const CNumber& l, const Quantity& r)
{
return r * l;
}
-Quantity operator/(const HNumber& l, const Quantity& r)
-{
- return Quantity(l) / r;
-}
-
Quantity operator/(const CNumber& l, const Quantity& r)
{
return Quantity(l) / r;
diff --git a/src/math/quantity.h b/src/math/quantity.h
index 4f0df5f0..42005ba3 100644
--- a/src/math/quantity.h
+++ b/src/math/quantity.h
@@ -38,9 +38,7 @@ class Rational;
class DMath;
class Quantity;
-Quantity operator*(const HNumber&, const Quantity&);
Quantity operator*(const CNumber&, const Quantity&);
-Quantity operator/(const HNumber&, const Quantity&);
Quantity operator/(const CNumber&, const Quantity&);
class Quantity {