diff --git a/src/main/py/read_math_function.py b/src/main/py/read_math_function.py
index 3b6238b..af12bc3 100644
--- a/src/main/py/read_math_function.py
+++ b/src/main/py/read_math_function.py
@@ -1,4 +1,4 @@
 def read_constant(type, value):
     if type != "c":
-        value = False
+        return False
     return value
\ No newline at end of file