diff --git a/README.md b/README.md
index 439f75b..82de758 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ since Geopar runs only one configuration.
 To run Geopar:
 1. Open Windows Command Prompt (cmd)
 2. Navigate to the **Windows** folder in the downloaded directory
-3. Prepare input.txt so that the triangulated figure you want to deal with is specified first 
+3. Prepare _input.txt_ so that the triangulated figure you want to deal with is specified first 
 4. Type `run.exe` to run the executable
 
 ## Running on Mac and Linux
@@ -31,4 +31,5 @@ since Geopar runs only one configuration.
 To run Geopar: 
 1. Open Terminal
 2. Navigate to the **Mac, Linux** folder in the downloaded directory
-3. Type `./run` to run the executable
+3. Prepare _input.txt_ so that the triangulated figure you want to deal with is specified first
+4. Type `./run` to run the executable