diff --git a/apps/sam/java/src/net/i2p/sam/SAMUtils.java b/apps/sam/java/src/net/i2p/sam/SAMUtils.java
index 04ed77f20..6497f4f1c 100644
--- a/apps/sam/java/src/net/i2p/sam/SAMUtils.java
+++ b/apps/sam/java/src/net/i2p/sam/SAMUtils.java
@@ -198,7 +198,7 @@ public class SAMUtils {
             val = props.getProperty(key);
             
             if (!firstIter) {
-                msg += ";";
+                builder.append(";");
             } else {
                 firstIter = false;
             }