diff --git a/README.md b/README.md
index 5bd2a58..cdba7ca 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ C code for videos on YouTube Channel https://www.youtube.com/c/NilsBerglund
 
 Parameter values used in specific simulations will be gradually added to file `Parameters.md`, `Parameters_June21.md` and so on.
 
-There are two groups of 4 files and 9 files:
+There are two groups of 4 files and 10 files:
 
 ### Simulations of classical particles in billiards.
 
@@ -41,9 +41,10 @@ in the shell before running the program
 4. *common_wave.c*:     common functions of `wave_billiard` and `wave_comparison`
 5. *wave_billiard.c*:   simulation of the (linear) wave equation
 6. *wave_comparison.c*: comparison of the wave equation in two different domains
-7. *mangrove.c*:        a version of wave_billiard with additional features to animate mangroves
-8. *heat.c*:            simulation of the heat equation, with optional drawing of gradient field lines
-9. *schrodinger.c*:     simulation of the Schrodinger equation
+7. *wave_energy.c*:     a version of wave_billiard plotting the energy profile of the wave
+8. *mangrove.c*:        a version of wave_billiard with additional features to animate mangroves
+9. *heat.c*:            simulation of the heat equation, with optional drawing of gradient field lines
+10. *schrodinger.c*:    simulation of the Schrodinger equation
 
 - Create subfolders `tif_wave`, `tif_heat`, `tif_schrod`
 - Customize constants at beginning of .c file