diff --git a/src/leveldbwrapper.cpp b/src/leveldbwrapper.cpp
index 26cacf95a..b5d024abb 100644
--- a/src/leveldbwrapper.cpp
+++ b/src/leveldbwrapper.cpp
@@ -13,7 +13,7 @@
 #include <leveldb/filter_policy.h>
 #include <memenv.h>
 
-void HandleError(const leveldb::Status& status) throw(leveldb_error)
+void HandleError(const leveldb::Status& status)
 {
     if (status.ok())
         return;
@@ -81,7 +81,7 @@ CLevelDBWrapper::~CLevelDBWrapper()
     options.env = NULL;
 }
 
-bool CLevelDBWrapper::WriteBatch(CLevelDBBatch& batch, bool fSync) throw(leveldb_error)
+bool CLevelDBWrapper::WriteBatch(CLevelDBBatch& batch, bool fSync)
 {
     leveldb::Status status = pdb->Write(fSync ? syncoptions : writeoptions, &batch.batch);
     HandleError(status);
diff --git a/src/leveldbwrapper.h b/src/leveldbwrapper.h
index c65e84270..639f736a5 100644
--- a/src/leveldbwrapper.h
+++ b/src/leveldbwrapper.h
@@ -22,7 +22,7 @@ public:
     leveldb_error(const std::string& msg) : std::runtime_error(msg) {}
 };
 
-void HandleError(const leveldb::Status& status) throw(leveldb_error);
+void HandleError(const leveldb::Status& status);
 
 /** Batch of changes queued to be written to a CLevelDBWrapper */
 class CLevelDBBatch
@@ -90,7 +90,7 @@ public:
     ~CLevelDBWrapper();
 
     template <typename K, typename V>
-    bool Read(const K& key, V& value) const throw(leveldb_error)
+    bool Read(const K& key, V& value) const
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
         ssKey.reserve(ssKey.GetSerializeSize(key));
@@ -115,7 +115,7 @@ public:
     }
 
     template <typename K, typename V>
-    bool Write(const K& key, const V& value, bool fSync = false) throw(leveldb_error)
+    bool Write(const K& key, const V& value, bool fSync = false)
     {
         CLevelDBBatch batch;
         batch.Write(key, value);
@@ -123,7 +123,7 @@ public:
     }
 
     template <typename K>
-    bool Exists(const K& key) const throw(leveldb_error)
+    bool Exists(const K& key) const
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
         ssKey.reserve(ssKey.GetSerializeSize(key));
@@ -142,14 +142,14 @@ public:
     }
 
     template <typename K>
-    bool Erase(const K& key, bool fSync = false) throw(leveldb_error)
+    bool Erase(const K& key, bool fSync = false)
     {
         CLevelDBBatch batch;
         batch.Erase(key);
         return WriteBatch(batch, fSync);
     }
 
-    bool WriteBatch(CLevelDBBatch& batch, bool fSync = false) throw(leveldb_error);
+    bool WriteBatch(CLevelDBBatch& batch, bool fSync = false);
 
     // not available for LevelDB; provide for compatibility with BDB
     bool Flush()
@@ -157,7 +157,7 @@ public:
         return true;
     }
 
-    bool Sync() throw(leveldb_error)
+    bool Sync()
     {
         CLevelDBBatch batch;
         return WriteBatch(batch, true);
diff --git a/zcutil/build.sh b/zcutil/build.sh
index 9d0194719..5e6b318f5 100755
--- a/zcutil/build.sh
+++ b/zcutil/build.sh
@@ -117,5 +117,5 @@ ld -v
 
 HOST="$HOST" BUILD="$BUILD" NO_RUST="$RUST_ARG" NO_PROTON="$PROTON_ARG" "$MAKE" "$@" -C ./depends/ V=1
 ./autogen.sh
-CC="$CC" CXX="$CXX" ./configure --prefix="${PREFIX}" --host="$HOST" --build="$BUILD" "$RUST_ARG" "$HARDENING_ARG" "$LCOV_ARG" "$TEST_ARG" "$MINING_ARG" "$PROTON_ARG" "$LIBS_ARG" CXXFLAGS='-fwrapv -fno-strict-aliasing -Werror -g'
+CC="$CC" CXX="$CXX" ./configure --prefix="${PREFIX}" --host="$HOST" --build="$BUILD" "$RUST_ARG" "$HARDENING_ARG" "$LCOV_ARG" "$TEST_ARG" "$MINING_ARG" "$PROTON_ARG" "$LIBS_ARG" CXXFLAGS='-fwrapv -fno-strict-aliasing -Wno-builtin-declaration-mismatch -Werror -g'
 "$MAKE" "$@" V=1