diff --git a/lib/str.c b/lib/str.c
index 9a89f30..f3cf89b 100644
--- a/lib/str.c
+++ b/lib/str.c
@@ -274,7 +274,7 @@ xtoi (
     CHAR16      c;
 
     // skip preceeding white space
-    while (*str && *str == ' ') {
+    while (*str == ' ') {
         str += 1;
     }