diff --git a/src/fortran/diffusion_equation.F90 b/src/fortran/diffusion_equation.F90
index d6e9823..d09ead6 100644
--- a/src/fortran/diffusion_equation.F90
+++ b/src/fortran/diffusion_equation.F90
@@ -99,8 +99,8 @@ PROGRAM DIFFUSION_EQUATION
   CALL cmfe_ErrorHandlingModeSet(CMFE_ERRORS_TRAP_ERROR,Err)
 
   !Get the computational nodes information
-  CALL cmfe_ComputationalNumberOfNodesGet(NumberOfComputationalNodes,Err)
-  CALL cmfe_ComputationalNodeNumberGet(ComputationalNodeNumber,Err)
+  CALL cmfe_ComputationalNumberOfNodesGet(numberOfComputationalNodes,err)
+  CALL cmfe_ComputationalNodeNumberGet(computationalNodeNumber,err)
 
   NUMBER_GLOBAL_X_ELEMENTS=10
   NUMBER_GLOBAL_Y_ELEMENTS=10