--- lp_pricePSE.c
+++ lp_pricePSE.c
@@ -145,7 +147,7 @@
 
   /* Store the active/current pricing type */
   if(isdual == AUTOMATIC)
-    isdual = (MYBOOL) lp->edgeVector[0];
+    isdual = lp->edgeVector[0] != 0.0;
   else
     lp->edgeVector[0] = isdual;