diff --git a/dyninstAPI/src/ast.C b/dyninstAPI/src/ast.C
index 566a193..2b917fe 100644
--- a/dyninstAPI/src/ast.C
+++ b/dyninstAPI/src/ast.C
@@ -2347,17 +2347,16 @@ bool AstDynamicTargetNode::generateCode_phase2(codeGen &gen,
 
 #if defined (arch_x86)
         emitVload(loadRegRelativeOp,
-                  (Address) sizeof(Address),
+                  (Address)0,
                   REGNUM_ESP,
                   retReg,
                   gen, noCost);
-#elif defined (arch_x86_64) // KEVINTODO: untested
+#elif defined (arch_x86_64)
         emitVload(loadRegRelativeOp,
-                  (Address) sizeof(Address),
+                  (Address)0,
                   REGNUM_RSP,
                   retReg,
                   gen, noCost);
-        bpwarn("WARNING: Untested functionality for x86/64 platform");
 #elif defined (arch_power) // KEVINTODO: untested
         emitVload(loadRegRelativeOp,
                   (Address) sizeof(Address),