diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0aa96cf729..5d80137f7d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -290,7 +290,7 @@ jobs:
       run: |
         git clone https://github.com/libunwind/libunwind
         cd libunwind
-        sudo ./autogen.sh
+        sudo autoreconf -i
         sudo ./configure
         sudo make -j 3
         sudo make install
diff --git a/contrib/epee/include/serialization/keyvalue_serialization_overloads.h b/contrib/epee/include/serialization/keyvalue_serialization_overloads.h
index 1f9d6b6d7f..9cc1b3573f 100644
--- a/contrib/epee/include/serialization/keyvalue_serialization_overloads.h
+++ b/contrib/epee/include/serialization/keyvalue_serialization_overloads.h
@@ -32,6 +32,7 @@
 #include <deque>
 #include <boost/mpl/vector.hpp>
 #include <boost/mpl/contains_fwd.hpp>
+#include <boost/mpl/contains.hpp>
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "serialization"
diff --git a/contrib/epee/include/storages/portable_storage.h b/contrib/epee/include/storages/portable_storage.h
index ec85375f64..3ba58872b5 100644
--- a/contrib/epee/include/storages/portable_storage.h
+++ b/contrib/epee/include/storages/portable_storage.h
@@ -30,6 +30,7 @@
 #include "portable_storage_val_converters.h"
 #include "misc_log_ex.h"
 #include "span.h"
+#include <boost/mpl/contains.hpp>
 
 namespace epee
 {
diff --git a/src/blockchain_db/blockchain_db.cpp b/src/blockchain_db/blockchain_db.cpp
index 75e9e1fd5c..3c3e0a95c2 100644
--- a/src/blockchain_db/blockchain_db.cpp
+++ b/src/blockchain_db/blockchain_db.cpp
@@ -216,15 +216,8 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const std::pair
     }
     else
     {
-      LOG_PRINT_L1("Unsupported input type, removing key images and aborting transaction addition");
-      for (const txin_v& tx_input : tx.vin)
-      {
-        if (tx_input.type() == typeid(txin_to_key))
-        {
-          remove_spent_key(boost::get<txin_to_key>(tx_input).k_image);
-        }
-      }
-      return;
+      LOG_PRINT_L1("Unsupported input type, aborting transaction addition");
+      throw std::runtime_error("Unexpected input type, aborting");
     }
   }
 
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 23deed0c31..6721847fc2 100755
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -1016,6 +1016,8 @@ gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets, double shap
   num_rct_outputs = *(end - 1);
   THROW_WALLET_EXCEPTION_IF(num_rct_outputs == 0, error::wallet_internal_error, "No rct outputs");
   average_output_time = DIFFICULTY_TARGET * blocks_to_consider / outputs_to_consider; // this assumes constant target over the whole rct range
+  if (average_output_time == 0)
+    average_output_time = DIFFICULTY_TARGET * blocks_to_consider / static_cast<double>(outputs_to_consider);   
 };
 
 gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets): gamma_picker(rct_offsets, GAMMA_SHAPE, GAMMA_SCALE) {}