diff --git a/MaterialLib/MPL/Properties/RelPermLiakopoulos.h b/MaterialLib/MPL/Properties/RelPermLiakopoulos.h
index 8823f16889206e3dc5bed514f37c15e78efad55f..c4b5a654e68748c1adec9b1e5848f8659aa4c56b 100644
--- a/MaterialLib/MPL/Properties/RelPermLiakopoulos.h
+++ b/MaterialLib/MPL/Properties/RelPermLiakopoulos.h
@@ -42,7 +42,7 @@ s^{\mathrm{r}}_{\mathrm{L}}}\f]
  *
  * where
  * \f[\lambda=3.0\f]
- * \f[s^{\mathrm{r}}_{\mathrm{L}=0.2\f]
+ * \f[s^{\mathrm{r}}_{\mathrm{L}}=0.2\f]
  */
 class RelPermLiakopoulos final : public Property
 {