diff --git a/bindings/java/src/net/hyperic/sigar/cmd/Df.java b/bindings/java/src/net/hyperic/sigar/cmd/Df.java
index 26981caf..f6275d20 100644
--- a/bindings/java/src/net/hyperic/sigar/cmd/Df.java
+++ b/bindings/java/src/net/hyperic/sigar/cmd/Df.java
@@ -17,7 +17,7 @@ import net.hyperic.sigar.util.GetlineCompleter;
 public class Df extends SigarCommandBase {
 
     private static final String OUTPUT_FORMAT =
-        "%-10s %4s %4s %5s %4s %-10s %s";
+        "%-15s %4s %4s %5s %4s %-15s %s";
 
     //like df -h -a
     private static final String[] HEADER = new String[] {
diff --git a/bindings/java/src/net/hyperic/sigar/cmd/Iostat.java b/bindings/java/src/net/hyperic/sigar/cmd/Iostat.java
index a01c95bd..040a6774 100644
--- a/bindings/java/src/net/hyperic/sigar/cmd/Iostat.java
+++ b/bindings/java/src/net/hyperic/sigar/cmd/Iostat.java
@@ -17,7 +17,7 @@ import net.hyperic.sigar.util.GetlineCompleter;
 public class Iostat extends SigarCommandBase {
 
     private static final String OUTPUT_FORMAT =
-        "%-10s %-10s %-10s %-10s";
+        "%-15s %-15s %-10s %-10s";
 
     //like df -h -a
     private static final String[] HEADER = new String[] {