diff --git a/clyx-go/clyx.go b/clyx-go/clyx.go
index 85b6c00..04f047b 100644
--- a/clyx-go/clyx.go
+++ b/clyx-go/clyx.go
@@ -268,7 +268,11 @@ func (c *Clyx) popCallerToken() any {
     }
   }
   if stream == nil {
-    stream = &c.tokens
+    if len(c.tokenStreams) == 0 {
+      stream = &c.tokens
+    } else {
+      return nil
+    }
   }
   if len(*stream) == 0 { return nil }
   t := (*stream)[0]
@@ -292,15 +296,17 @@ func (c *Clyx) cmdDefw() {
       break
     }
   }
-  if stream == nil {
+  if stream == nil && len(c.tokenStreams) == 0 {
     stream = &c.tokens
   }
   var val any
-  if len(*stream) > 0 {
+  if stream != nil && len(*stream) > 0 {
     t0 := (*stream)[0]
     isQForm := false
     if s, ok := t0.(string); ok && s == "[" { isQForm = true } else if _, ok := t0.([]any); ok { isQForm = true }
-    if isQForm { val = c.popCallerToken() }
+    if isQForm {
+      val = c.popCallerToken()
+    }
   }
   if val == nil { val = c.pop() }
   if s, ok := val.(string); ok {
diff --git a/clyx-python/clyx/clyx.py b/clyx-python/clyx/clyx.py
index a8df406..81d32df 100755
--- a/clyx-python/clyx/clyx.py
+++ b/clyx-python/clyx/clyx.py
@@ -108,7 +108,10 @@ class Clyx:
         t = stream
         break
     if t is None:
-      t = self._tokens
+      if not self._token_streams:
+        t = self._tokens
+      else:
+        return None
     if not t: return None
     val = t.pop(0)
     if val == '[': return self._parse_qform(t)
@@ -120,7 +123,7 @@ class Clyx:
       if stream:
         t = stream
         break
-    if t is None:
+    if t is None and not self._token_streams:
       t = self._tokens
     val = self._pop_caller_token() if (t and (t[0] == '[' or isinstance(t[0], list))) else self._stack.pop()
     if isinstance(val, str): val = self._norm_token(val)
diff --git a/test.clx b/test.clx
index 0b2d7ae..0937a13 100644
--- a/test.clx
+++ b/test.clx
@@ -21,6 +21,7 @@ _start [
 0 if [ "  if false FAIL" ] [ "  if false PASS" ] puts cr  # Test if false
 10 20 [ 5 - ] dip [] cons cons [ 5 20 ] streq if [ "  dip PASS" puts cr ] [ "  dip FAIL" puts cr ]  # Test dip
 5 dup while [ 1 - dup ] 0 = if [ "  while loop PASS" puts cr ] [ "  while loop FAIL" puts cr ]  # Test while
+:: test_while_word [ 5 dup while [ 1 - dup ] ] test_while_word 0 = if [ "  while in word PASS" puts cr ] [ "  while in word FAIL" puts cr ]  # Test while in word
 0 [ + ] [ 1 2 3 ] qfor 6 = 0 [ + ] [] qfor 0 = and if [ "  qfor PASS" puts cr ] [ "  qfor FAIL" puts cr ]  # Test qfor
 0 for [ 1 4 range ] [ + ] 6 = 0 for [ [] ] [ + ] 0 = and if [ "  for PASS" puts cr ] [ "  for FAIL" puts cr ]  # Test for