--- a/gas/config/tc-wasm32.c
+++ b/gas/config/tc-wasm32.c
@@ -229,7 +229,7 @@ md_apply_fix (fixS * fixP, valueT * valP
 static inline char *
 skip_space (char *s)
 {
-  while (*s == ' ' || *s == '\t')
+  while (is_whitespace (*s))
     ++s;
   return s;
 }