diff --git a/vpi/sys_display.c b/vpi/sys_display.c
index 18729c4f1..5a5efd19d 100644
--- a/vpi/sys_display.c
+++ b/vpi/sys_display.c
@@ -1048,6 +1048,7 @@ static int sys_check_args(vpiHandle callh, vpiHandle argv, const PLI_BYTE8*name,
 	      case vpiNet:
 	      case vpiReg:
 	      case vpiIntegerVar:
+	      case vpiBitVar:
 	      case vpiByteVar:
 	      case vpiShortIntVar:
 	      case vpiIntVar:
diff --git a/vvp/compile.cc b/vvp/compile.cc
index f742a50a5..5c2aec1f4 100644
--- a/vvp/compile.cc
+++ b/vvp/compile.cc
@@ -289,6 +289,7 @@ vvp_net_t* vvp_net_lookup(const char*label)
 	    switch (vpi->vpi_type->type_code) {
 		case vpiNet:
 		case vpiReg:
+		case vpiBitVar:
 		case vpiByteVar:
 		case vpiShortIntVar:
 		case vpiIntVar: