diff --git a/src/units.c b/src/units.c
index 75b26e5561d458515b4f422949e801e70220df7f..00c53d89953b38d09de876aea6cccf167b79f8cb 100644
--- a/src/units.c
+++ b/src/units.c
@@ -301,6 +301,10 @@ void units_get_base_unit_exponents_array(float baseUnitsExp[5],
       baseUnitsExp[UNIT_TIME] = -2.f;
       break;
 
+    case UNIT_CONV_TIDAL_TENSOR:
+      baseUnitsExp[UNIT_TIME] = -2.f;
+      break;
+
     case UNIT_CONV_ENERGY:
       baseUnitsExp[UNIT_MASS] = 1.f;
       baseUnitsExp[UNIT_LENGTH] = 2.f;
diff --git a/src/units.h b/src/units.h
index 59ff31dff80553d47da8a49ec24b2792f8f9b4d1..87ab963e0ac640521501475121fa77ad1faaf2bc 100644
--- a/src/units.h
+++ b/src/units.h
@@ -79,6 +79,7 @@ enum unit_conversion_factor {
   UNIT_CONV_MOMENTUM,
   UNIT_CONV_ANGULAR_MOMENTUM,
   UNIT_CONV_FORCE,
+  UNIT_CONV_TIDAL_TENSOR,
   UNIT_CONV_ENERGY,
   UNIT_CONV_ENERGY_PER_UNIT_MASS,
   UNIT_CONV_ENTROPY,