diff --git a/src/wallet/coinselection.cpp b/src/wallet/coinselection.cpp
index 8d69957c302..51c50647871 100644
--- a/src/wallet/coinselection.cpp
+++ b/src/wallet/coinselection.cpp
@@ -1027,11 +1027,6 @@ bool SelectionResult::operator<(SelectionResult other) const
     return *m_waste < *other.m_waste || (*m_waste == *other.m_waste && m_selected_inputs.size() > other.m_selected_inputs.size());
 }
 
-std::string COutput::ToString() const
-{
-    return strprintf("COutput(%s, %d, %d) [%s]", outpoint.hash.ToString(), outpoint.n, depth, FormatMoney(txout.nValue));
-}
-
 std::string GetAlgorithmName(const SelectionAlgorithm algo)
 {
     switch (algo)
diff --git a/src/wallet/coinselection.h b/src/wallet/coinselection.h
index a6206331acb..21fe9ff74bc 100644
--- a/src/wallet/coinselection.h
+++ b/src/wallet/coinselection.h
@@ -98,8 +98,6 @@ public:
         effective_value = txout.nValue - fee.value();
     }
 
-    std::string ToString() const;
-
     bool operator<(const COutput& rhs) const
     {
         return outpoint < rhs.outpoint;