diff --git a/src/Frag.cc b/src/Frag.cc
index b1efb41594..30bec88af1 100644
--- a/src/Frag.cc
+++ b/src/Frag.cc
@@ -260,6 +260,7 @@ void FragReassembler::BlockInserted(DataBlock* /* start_block */)
 			reporter->InternalWarning("bad fragment reassembly");
 			DeleteTimer();
 			Expire(network_time);
+			delete [] pkt_start;
 			return;
 			}