diff --git a/org/homelinux/largo/checkers/Checkers.java b/org/homelinux/largo/checkers/Checkers.java
--- a/org/homelinux/largo/checkers/Checkers.java
+++ b/org/homelinux/largo/checkers/Checkers.java
@@ -142,7 +142,7 @@
 				if (board.simu_debug()) {
 					for (int i=0;i<64;i++) {
 						if((i+1)%8 == 0 )
-							System.err.printf("%2d=%d\n", i, board.getValue(i));
+							System.err.printf("%2d=%d%n", i, board.getValue(i));
 						else
 							System.err.printf("%2d=%d ", i, board.getValue(i));
 					}
@@ -198,7 +198,7 @@
 				if (board.simu_debug()) {
 					for (int i=0;i<64;i++) {
 						if((i+1)%8 == 0 )
-							System.out.printf("%2d=%d\n", i, board.getValue(i));
+							System.out.printf("%2d=%d%n", i, board.getValue(i));
 						else
 							System.out.printf("%2d=%d ", i, board.getValue(i));
 					}