diff --git a/test_constraints/CMakeLists.txt b/test_constraints/CMakeLists.txt
index bdb60f10..6b4693d5 100644
--- a/test_constraints/CMakeLists.txt
+++ b/test_constraints/CMakeLists.txt
@@ -22,10 +22,10 @@ function(test_constraint name pattern)
 
 	add_dependencies(test_sqlpp_constraints test_${name})
 
-endfunction(testconstraint)
-
+endfunction(test_constraint)
 
 test_constraint(no_conversion_operator_if_null_not_trivial "int i = row.alpha")
 test_constraint(require_insert "required column is missing")
 test_constraint(must_not_insert "one assignment is prohibited")
+test_constraint(must_not_update "one assignment is prohibited")