diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -80,10 +80,6 @@
         //! included in the current chain.
         virtual Optional<int> getBlockHeight(const BlockHash &hash) = 0;
 
-        //! Get block depth. Returns 1 for chain tip, 2 for preceding block, and
-        //! so on. Returns 0 for a block not included in the current chain.
-        virtual int getBlockDepth(const BlockHash &hash) = 0;
-
         //! Get block hash. Height must be valid or this function will abort.
         virtual BlockHash getBlockHash(int height) = 0;
 
diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -52,11 +52,6 @@
             }
             return nullopt;
         }
-        int getBlockDepth(const BlockHash &hash) override {
-            const Optional<int> tip_height = getHeight();
-            const Optional<int> height = getBlockHeight(hash);
-            return tip_height && height ? *tip_height - *height + 1 : 0;
-        }
         BlockHash getBlockHash(int height) override {
             LockAssertion lock(::cs_main);
             CBlockIndex *block = ::ChainActive()[height];
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1059,7 +1059,8 @@
     auto locked_chain = chain().lock();
     LOCK(cs_wallet);
 
-    int conflictconfirms = -locked_chain->getBlockDepth(hashBlock);
+    int conflictconfirms =
+        (m_last_block_processed_height - conflicting_height + 1) * -1;
 
     // If number of conflict confirms cannot be determined, this means that the
     // block is still unknown or not yet part of the main chain, for example