diff --git a/src/main/java/nl/peterbloem/motive/exec/Run.java b/src/main/java/nl/peterbloem/motive/exec/Run.java
index ed74b65..53a4b92 100644
--- a/src/main/java/nl/peterbloem/motive/exec/Run.java
+++ b/src/main/java/nl/peterbloem/motive/exec/Run.java
@@ -199,7 +199,7 @@ public static void main(String[] args)
 	    			
     			
     		} catch (IOException e) {
-				throw new IllegalArgumentException("There was a problem reading the input file ("+file+").");
+				throw new IllegalArgumentException("There was a problem reading the input file ("+file+").", e);
 			}
     		
     		CompareLarge large = new CompareLarge();