diff --git a/ncl/nxsblock.cpp b/ncl/nxsblock.cpp
index 0875596..5b3b268 100644
--- a/ncl/nxsblock.cpp
+++ b/ncl/nxsblock.cpp
@@ -282,6 +282,7 @@ NxsBlock::NxsBlock()
 	nexusReader(NULL),
 	next(NULL),
 	linkAPI(false),
+	 autoTitle(false),
 	storeSkippedCommands(true)
 	{
 	}
@@ -638,4 +639,3 @@ void NxsBlock::DemandEndSemicolon(NxsToken &token, const char *contextString) co
 	{
 	NxsToken::DemandEndSemicolon(token, this->errormsg, contextString);
 	}
-
diff --git a/ncl/nxstreesblock.cpp b/ncl/nxstreesblock.cpp
index 3162062..406cbce 100644
--- a/ncl/nxstreesblock.cpp
+++ b/ncl/nxstreesblock.cpp
@@ -806,6 +806,7 @@ NxsTreesBlock::NxsTreesBlock(
   NxsTaxaBlockAPI *tb)	/* the NxsTaxaBlockAPI object to be queried for taxon names appearing in tree descriptions */
   :NxsTaxaBlockSurrogate(tb, NULL),
   processedTreeValidationFunction(NULL),
+  constructingTaxaBlock(false),
   ptvArg(NULL)
 	{
 	NCL_BLOCKTYPE_ATTR_NAME = "TREES";
@@ -2142,4 +2143,3 @@ void NxsTreesBlock::ReadPhylipTreeFile(NxsToken & token)
 	allowImplicitNames = prevAIN;
 	useNewickTokenizingDuringParse = prevUNTDP;
 	}
-