diff --git a/doc/examples/tree2.c b/doc/examples/tree2.c
index 1cd1abe..6548e29 100644
--- a/doc/examples/tree2.c
+++ b/doc/examples/tree2.c
@@ -27,7 +27,6 @@
 {
     xmlDocPtr doc = NULL;       /* document pointer */
     xmlNodePtr root_node = NULL, node = NULL, node1 = NULL;/* node pointers */
-    xmlDtdPtr dtd = NULL;       /* DTD pointer */
     char buff[256];
     int i, j;
 
@@ -43,7 +42,7 @@
     /*
      * Creates a DTD declaration. Isn't mandatory. 
      */
-    dtd = xmlCreateIntSubset(doc, BAD_CAST "root", NULL, BAD_CAST "tree2.dtd");
+    xmlCreateIntSubset(doc, BAD_CAST "root", NULL, BAD_CAST "tree2.dtd");
 
     /* 
      * xmlNewChild() creates a new node, which is "attached" as child node
diff --git a/timsort.h b/timsort.h
index 9369e7c..19aebf2 100644
--- a/timsort.h
+++ b/timsort.h
@@ -394,7 +394,7 @@
 {
   while (1) {
     int64_t A, B, C, D;
-    int ABC, BCD, BD, CD;
+    int ABC, BCD, CD;
 
     /* if the stack only has one thing on it, we are done with the collapse */
     if (stack_curr <= 1) {
@@ -431,7 +431,6 @@
 
     BCD = (B <= C + D) || ABC;
     CD = (C <= D);
-    BD = (B < D);
 
     /* Both invariants are good */
     if (!BCD && !CD) {