diff --git a/unittests/invalid_function_assignment.txt b/unittests/invalid_function_assignment.txt
index 2970e6ef..fcf2985f 100644
--- a/unittests/invalid_function_assignment.txt
+++ b/unittests/invalid_function_assignment.txt
@@ -1 +1 @@
-Error: "Mismatched types in equation" in 'unittests/invalid_function_assignment.chai' at (1, 7)
+Error: "Mismatched types in equation, lhs is const." in 'unittests/invalid_function_assignment.chai' at (1, 7)
diff --git a/unittests/invalid_function_reassignment.txt b/unittests/invalid_function_reassignment.txt
index b1ad7284..1cc80b07 100644
--- a/unittests/invalid_function_reassignment.txt
+++ b/unittests/invalid_function_reassignment.txt
@@ -1 +1 @@
-Error: "Mismatched types in equation" in 'unittests/invalid_function_reassignment.chai' at (2, 3)
+Error: "Mismatched types in equation." in 'unittests/invalid_function_reassignment.chai' at (2, 3)