diff --git a/INSTALL.md b/INSTALL.md
index b463bb1..9c876d0 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,3 +1,10 @@
+# Generic installation
+
+```bash
+opam install lacaml mpi getopt alcotest zarith
+```
+
+
 # BLAS/Lapack
 
 Install OpenBLAS from your system package manager, for example:
@@ -24,6 +31,7 @@ opam install lacaml
 # MPI
 
 MPI is the Message Passing Interface, required for distributed parallelism.
+For large MPI calculations, a version >= 4.09.0 of the compiler is required.
 
 ```bash
 opam install mpi
diff --git a/README.md b/README.md
index cd8747a..8b4cadb 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 QCaml (Quantum Camel)
 =====================
 
-<img src="data/chamo.png"  width="300" >
+<img src="data/chamo_bg.png"  width="300" >
 
 Requirements
 ------------