diff --git a/jq.pyx b/jq.pyx
index f42efdf..5ee38f4 100644
--- a/jq.pyx
+++ b/jq.pyx
@@ -124,7 +124,7 @@ cdef object _jv_to_python(jv value):
     return python_value
 
 
-cdef int _is_integer(double value):
+cdef int _is_integer(double value) noexcept:
     cdef double integral_part
     cdef double fractional_part = modf(value, &integral_part)