diff --git a/src/vol/ntops.c b/src/vol/ntops.c
index 589a61da11..47ae1d711f 100644
--- a/src/vol/ntops.c
+++ b/src/vol/ntops.c
@@ -376,5 +376,7 @@ nt_DriveToDev(char *drive)
 	dev = toupper(*drive) - 'A';
     if ((dev < 2) || (dev > 25))
 	return -1;
+
+    return dev;
 }
 #endif