diff --git a/tests/builtin_specifications/test_EnforceMeltingTemperature.py b/tests/builtin_specifications/test_EnforceMeltingTemperature.py
new file mode 100644
index 0000000..356fdbc
--- /dev/null
+++ b/tests/builtin_specifications/test_EnforceMeltingTemperature.py
@@ -0,0 +1,17 @@
+from dnachisel import DnaOptimizationProblem
+from dnachisel.builtin_specifications import (
+    EnforceMeltingTemperature,
+)
+
+
+def test_enforce_metling_temperature():
+    """Test by creating a new primer."""
+    # Test issue #89
+    problem = DnaOptimizationProblem(
+        sequence="ATTTGAGACCCGACGTTAGA",
+        objectives=[
+            EnforceMeltingTemperature(mini=20, maxi=86, location=None, boost=1.0)
+        ],
+    )
+    problem.resolve_constraints()
+    problem.optimize()