diff --git a/tutorials/multicomponentFluid/lockExchange/constant/physicalProperties b/tutorials/multicomponentFluid/lockExchange/constant/physicalProperties
index c97029bf2c..c44d34b733 100644
--- a/tutorials/multicomponentFluid/lockExchange/constant/physicalProperties
+++ b/tutorials/multicomponentFluid/lockExchange/constant/physicalProperties
@@ -17,7 +17,7 @@ FoamFile
 thermoType
 {
     type            heRhoThermo;
-    mixture         multiComponentMixture;
+    mixture         multicomponentMixture;
     transport       const;
     thermo          hConst;
     equationOfState rhoConst;