diff --git a/src/black/nodes.py b/src/black/nodes.py
index 5f6b280c035..2ea9c2c5915 100644
--- a/src/black/nodes.py
+++ b/src/black/nodes.py
@@ -838,14 +838,14 @@ def is_async_stmt_or_funcdef(leaf: Leaf) -> bool:
     )
 
 
-def is_type_comment(leaf: Leaf) -> bool:
+def is_type_comment(leaf: Leaf,suffix,str="") -> bool:
     """Return True if the given leaf is a type comment. This function should only
     be used for general type comments (excluding ignore annotations, which should
     use `is_type_ignore_comment`). Note that general type comments are no longer
     used in modern version of Python, this function may be deprecated in the future."""
     t = leaf.type
-    v = leaf.value
-    return t in {token.COMMENT, STANDALONE_COMMENT} and v.startswith("# type:")
+    v = leaf.value.strip()
+    return t in {token.COMMENT, STANDALONE_COMMENT} and v.startswith("# type:"+suffix)
 
 
 def is_type_ignore_comment(leaf: Leaf) -> bool: