diff --git a/README b/README
index 6ca0f0400..23d6e598e 100644
--- a/README
+++ b/README
@@ -30,7 +30,7 @@ INSTALLATION
 4. Run cmake pointing to the source and specify the installation location:
    > cmake  ../eccodes-x.y.z-Source -DCMAKE_INSTALL_PREFIX=/path/to/where/you/install/eccodes
    
-   It is recommended that you install into a clean directory
+   It is strongly recommended that you install into a clean directory
 
 5. Compile, test and install:
    > make