diff --git a/src/parser3.h b/src/parser3.h
index 37f9a64..30c1a99 100644
--- a/src/parser3.h
+++ b/src/parser3.h
@@ -856,9 +856,11 @@ inline Status n_whitespace(Parser3 *self) {
     self->pop();
     MUSTTAIL return Parser3::keepGoing(self);
   }
-  if (tables.whitespace[uint8_t(*self->buf)]) {
+  while (tables.whitespace[uint8_t(*self->buf)]) {
     ++self->buf;
-    MUSTTAIL return Parser3::keepGoing(self);
+    if (self->buf == self->bufEnd) {
+      return S_AGAIN;
+    }
   }
   self->pop();
   MUSTTAIL return Parser3::keepGoing(self);