diff --git a/math/gen-libm-test.py b/math/gen-libm-test.py
index 397dbd3259..1630fc51a5 100755
--- a/math/gen-libm-test.py
+++ b/math/gen-libm-test.py
@@ -103,7 +103,7 @@ EXC_EXPECTED = {'divbyzero': 'DIVBYZERO_EXCEPTION',
                 'invalid': 'INVALID_EXCEPTION',
                 'overflow': 'OVERFLOW_EXCEPTION',
                 'underflow': 'UNDERFLOW_EXCEPTION'}
-EXC_OK = {'divbyzero': 'DIVBYZERO_EXCEPTION_OK',
+EXC_OK = {'divbyzero': 'DIVIDE_BY_ZERO_EXCEPTION_OK',
           'inexact': '0',
           'invalid': 'INVALID_EXCEPTION_OK',
           'overflow': 'OVERFLOW_EXCEPTION_OK',