diff --git a/src/Expr.cc b/src/Expr.cc
index 1ab49bcd3b..f8d2772feb 100644
--- a/src/Expr.cc
+++ b/src/Expr.cc
@@ -2664,8 +2664,6 @@ void AssignExpr::EvalIntoAggregate(const BroType* t, Val* aggr, Frame* f) const
 		Error("bad table insertion");
 
 	TableVal* tv = aggr->AsTableVal();
-	const TableType* tt = tv->Type()->AsTableType();
-	const BroType* yt = tv->Type()->YieldType();
 
 	Val* index = op1->Eval(f);
 	Val* v = op2->Eval(f);
diff --git a/src/SMTP.cc b/src/SMTP.cc
index 3af8af3b7b..85a3bc79dc 100644
--- a/src/SMTP.cc
+++ b/src/SMTP.cc
@@ -353,7 +353,6 @@ void SMTP_Analyzer::ProcessLine(int length, const char* line, bool orig)
 			int ext_len;
 
 			get_word(end_of_line - line, line, ext_len, ext);
-			line = skip_whitespace(line + ext_len, end_of_line);
 			ProcessExtension(ext_len, ext);
 			}
 		}
diff --git a/src/TCP.cc b/src/TCP.cc
index dc71d13252..3315db79f3 100644
--- a/src/TCP.cc
+++ b/src/TCP.cc
@@ -990,7 +990,6 @@ void TCP_Analyzer::DeliverPacket(int len, const u_char* data, bool is_orig,
 		Conn()->SetLastTime(t);
 
 	const IPAddr orig_addr = Conn()->OrigAddr();
-	const IPAddr resp_addr = Conn()->RespAddr();
 
 	uint32 tcp_hdr_len = data - (const u_char*) tp;