diff --git a/vvp/vpi_const.cc b/vvp/vpi_const.cc
index 82a70572b..e4d207dc9 100644
--- a/vvp/vpi_const.cc
+++ b/vvp/vpi_const.cc
@@ -595,7 +595,7 @@ void __vpiDecConst::vpi_get_value(p_vpi_value vp)
 	      break;
 
           case vpiBinStrVal:
-	      for(int bit=31; bit<=0;bit--){
+	      for(int bit=31; bit>=0;bit--){
 		  *cp++ = "01"[ (value>>bit)&1 ];
 	      }
 	      *cp = 0;