diff --git a/tools/inject.py b/tools/inject.py
index 7ca8896bdf5e..541b5104287e 100755
--- a/tools/inject.py
+++ b/tools/inject.py
@@ -347,7 +347,7 @@ def _parse_frames(self):
             count += c == '('
             count -= c == ')'
             if not count:
-                if c == '\0' or (c == '<' and data[i + 1] == '-'):
+                if c == '\0' or (c == '=' and data[i + 1] == '>'):
                     if len(cur_frame) == 2:
                         frame = tuple(cur_frame)
                     elif cur_frame[0][0] == '(':