diff --git a/build-aux/m4/bitcoin_find_bdb53.m4 b/build-aux/m4/bitcoin_find_bdb53.m4
--- a/build-aux/m4/bitcoin_find_bdb53.m4
+++ b/build-aux/m4/bitcoin_find_bdb53.m4
@@ -45,7 +45,7 @@
 
   if test "x$BDB_LIBS" = "x"; then
     # TODO: Ideally this could find the library version and make sure it matches the headers being used
-    for searchlib in db_cxx-5.3 db_cxx; do
+    for searchlib in db_cxx-5.3 db_cxx db5_cxx; do
       AC_CHECK_LIB([$searchlib],[main],[
         BDB_LIBS="-l${searchlib}"
         break
diff --git a/cmake/modules/FindBerkeleyDB.cmake b/cmake/modules/FindBerkeleyDB.cmake
--- a/cmake/modules/FindBerkeleyDB.cmake
+++ b/cmake/modules/FindBerkeleyDB.cmake
@@ -22,7 +22,7 @@
 	HINTS ${BREW_HINT}
 )
 find_library(BDBXX_LIBRARY
-	NAMES db_cxx libdb_cxx
+	NAMES db_cxx libdb_cxx db5_cxx
 	HINTS ${BREW_HINT}
 )
 
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -546,6 +546,9 @@
    *openbsd*)
      LEVELDB_TARGET_FLAGS="-DOS_OPENBSD"
      ;;
+   *netbsd*)
+     LEVELDB_TARGET_FLAGS="-DOS_NETBSD"
+     ;;
    *)
      OTHER_OS=`echo ${host_os} | awk '{print toupper($0)}'`
      AC_MSG_WARN([Guessing LevelDB OS as OS_${OTHER_OS}, please check whether this is correct, if not add an entry to configure.ac.])