diff --git a/tools/test.py b/tools/test.py
index 48d4a1a1eaa2ae..4cb0bd631dcc23 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -1349,9 +1349,7 @@ def ReadConfigurationInto(path, sections, defs):
     if prefix_match:
       prefix = SplitPath(prefix_match.group(1).strip())
       continue
-    print "Malformed line: '%s'." % line
-    return False
-  return True
+    raise Exception("Malformed line: '%s'." % line)
 
 
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