diff --git a/mingw.txt b/mingw.txt
index 19e861d7d..d90d32542 100644
--- a/mingw.txt
+++ b/mingw.txt
@@ -47,6 +47,8 @@ critical, but these are the versions I use.
      msys-1.0			<http://www.mingw/org>
      msysDTK-1.0		<http://www.mingw.org>
      Mingw32-5.x		<http://www.mingw.org>
+        ... including the sub-packages binutils, gcc-core and gcc-g++
+	if you are given the option.
      readline-4.2-20010727.zip  <http://mingwrep.sourceforge.net>
      bzip2-1.0.3		<http://gnuwin32.sourceforge.net>
      zlib-1.2.3			<http://gnuwin32.sourceforge.net>
diff --git a/vpi/sys_fileio.c b/vpi/sys_fileio.c
index 9bbd5bb1c..996566640 100644
--- a/vpi/sys_fileio.c
+++ b/vpi/sys_fileio.c
@@ -480,23 +480,40 @@ static PLI_INT32 sys_ungetc_compiletf(PLI_BYTE8*name)
       vpiHandle item = vpi_scan(argv);
 
       if (item == 0) {
-	    vpi_printf("%s: mcd parameter missing.\n", name);
+	    vpi_printf("%s: character parameter missing.\n", name);
 	    return 0;
       }
-
       type = vpi_get(vpiType, item);
       switch (type) {
 	    case vpiReg:
-	    case vpiRealVal:
+	    case vpiRealVal: // Is this correct?
 	    case vpiIntegerVar:
 	      break;
 	    default:
-	      vpi_printf("ERROR: %s mcd parameter must be of integral", name);
-	      vpi_printf(", got vpiType=%d\n", type);
+	      vpi_printf("ERROR: %s character parameter must be ", name);
+	      vpi_printf("integral, got vpiType=%d\n", type);
 	      vpi_free_object(argv);
 	      return 0;
       }
 
+      item = vpi_scan(argv);
+      type = vpi_get(vpiType, item);
+      switch (type) {
+	    case vpiReg:
+	    case vpiRealVal: // Is this correct?
+	    case vpiIntegerVar:
+	      break;
+	    default:
+	      vpi_printf("ERROR: %s mcd parameter must be integral, ", name);
+	      vpi_printf("got vpiType=%d\n", type);
+	      vpi_free_object(argv);
+	      return 0;
+      }
+
+	/* That should be all the arguments. */
+      item = vpi_scan(argv);
+      assert(item == 0);
+
       return 0;
 }
 
@@ -504,7 +521,7 @@ static PLI_INT32 sys_ungetc_calltf(PLI_BYTE8*name)
 {
       unsigned int mcd;
       unsigned char x;
-      s_vpi_value value, xvalue, rval;
+      s_vpi_value val, rval;
       vpiHandle sys = vpi_handle(vpiSysTfCall, 0);
       vpiHandle argv = vpi_iterate(vpiArgument, sys);
       vpiHandle item = vpi_scan(argv);
@@ -512,11 +529,15 @@ static PLI_INT32 sys_ungetc_calltf(PLI_BYTE8*name)
 
       rval.format = vpiIntVal;
 
-      assert(item);
+      val.format = vpiIntVal;
+      vpi_get_value(item, &val);
+      x = val.value.integer;
 
-      value.format = vpiIntVal;
-      vpi_get_value(item, &value);
-      mcd = value.value.integer;
+      item = vpi_scan(argv);
+
+      val.format = vpiIntVal;
+      vpi_get_value(item, &val);
+      mcd = val.value.integer;
 
       if (IS_MCD(mcd)) {
 	    rval.value.integer = EOF;
@@ -524,12 +545,6 @@ static PLI_INT32 sys_ungetc_calltf(PLI_BYTE8*name)
 	    return 0;
       }
 
-      item = vpi_scan(argv);
-
-      xvalue.format = vpiIntVal;
-      vpi_get_value(item, &xvalue);
-      x = xvalue.value.integer;
-
       fp = vpi_get_file(mcd);
       if ( !fp ) {
 	    rval.value.integer = EOF;
diff --git a/vvp/vpi_priv.cc b/vvp/vpi_priv.cc
index ec629c0cb..ee863a8cb 100644
--- a/vvp/vpi_priv.cc
+++ b/vvp/vpi_priv.cc
@@ -863,10 +863,16 @@ vpiHandle vpi_handle_by_name(const char *name, vpiHandle scope)
        */
       if (scope) {
 	    /* Some implementations support either a module or a scope. */
-	    if (vpi_get(vpiType, scope ) == vpiScope) {
+	    switch (vpi_get(vpiType, scope)) {
+		case vpiScope:
 	          hand = vpi_handle(vpiModule, scope);
-	    } else {
+	          break;
+		case vpiModule:
 	          hand = scope;
+	          break;
+		default:
+	          // Use vpi_chk_error() here when it is implemented.
+	          return 0;
 	    }
       } else {
 	    hand = find_scope(name, NULL, 0);