diff --git a/src/File.cc b/src/File.cc
index 437370205a..674d096fb2 100644
--- a/src/File.cc
+++ b/src/File.cc
@@ -663,7 +663,7 @@ void BroFile::InitEncrypt(const char* keyfile)
 
 	unsigned char secret[EVP_PKEY_size(pub_key)];
 	unsigned char* psecret = secret;
-	unsigned long secret_len;
+	unsigned int secret_len;
 
 	int iv_len = EVP_CIPHER_iv_length(cipher_type);
 	unsigned char iv[iv_len];
diff --git a/src/RemoteSerializer.h b/src/RemoteSerializer.h
index 31ee7e9143..f849a6a2b5 100644
--- a/src/RemoteSerializer.h
+++ b/src/RemoteSerializer.h
@@ -324,6 +324,7 @@ private:
 	PeerID current_id;
 	char current_msgtype;
 	ChunkedIO::Chunk* current_args;
+	double last_flush;
 
 	id_list sync_ids;
 
diff --git a/src/Serializer.cc b/src/Serializer.cc
index a29cb93b77..d38e8b3976 100644
--- a/src/Serializer.cc
+++ b/src/Serializer.cc
@@ -1145,7 +1145,7 @@ Packet* Packet::Unserialize(UnserialInfo* info)
 	if ( ! info->s->Read((char**) &tag, 0, "tag") )
 		return 0;
 
-	u_char* pkt;
+	char* pkt;
 	int caplen;
 	if ( ! info->s->Read((char**) &pkt, &caplen, "data") )
 		{
@@ -1155,7 +1155,7 @@ Packet* Packet::Unserialize(UnserialInfo* info)
 
 	hdr->caplen = uint32(caplen);
 	p->hdr = hdr;
-	p->pkt = pkt;
+	p->pkt = (u_char*) pkt;
 	p->tag = tag;
 	p->hdr_size = get_link_header_size(p->link_type);
 
diff --git a/src/Sessions.cc b/src/Sessions.cc
index 3825f35f62..1d2604b8db 100644
--- a/src/Sessions.cc
+++ b/src/Sessions.cc
@@ -1052,7 +1052,7 @@ Connection* NetSessions::NewConn(HashKey* k, double t, const ConnID* id,
 	int flags = 0;
 
 	// Hmm... This is not great.
-	TransportProto tproto;
+	TransportProto tproto = TRANSPORT_UNKNOWN;
 	switch ( proto ) {
 		case IPPROTO_ICMP:
 			tproto = TRANSPORT_ICMP;
diff --git a/src/Val.cc b/src/Val.cc
index 43288e99e2..6a844c5df2 100644
--- a/src/Val.cc
+++ b/src/Val.cc
@@ -2497,7 +2497,7 @@ bool TableVal::DoSerialize(SerialInfo* info) const
 		IterCookie* c;
 		TableEntryVal* v;	// current value
 		bool did_index;	// already wrote the val's index
-	}* state;
+	}* state = 0;
 
 	PDict(TableEntryVal)* tbl =
 		const_cast<TableVal*>(this)->AsNonConstTable();
diff --git a/src/nb_dns.c b/src/nb_dns.c
index 6f42004dd0..475ba3b8b0 100644
--- a/src/nb_dns.c
+++ b/src/nb_dns.c
@@ -434,7 +434,7 @@ nb_dns_activity(struct nb_dns_info *nd, struct nb_dns_result *nr, char *errstr)
 	register char **ap, **hap;
 	register u_int16_t id;
 	register const u_char *rdata;
-	register u_int32_t rttl;
+	register u_int32_t rttl = 0;	// make compiler happy.
 	register struct hostent *he;
 	register size_t rdlen;
 	ns_msg handle;
diff --git a/src/ssl-analyzer.pac b/src/ssl-analyzer.pac
index 232bb30ab4..6471d9c4a4 100644
--- a/src/ssl-analyzer.pac
+++ b/src/ssl-analyzer.pac
@@ -268,21 +268,21 @@ refine connection SSL_Conn += {
 					int num_ext = X509_get_ext_count(pTemp);
 					for ( int k = 0; k < num_ext; ++k )
 						{
-						char *pBuffer = 0;
+						unsigned char *pBuffer = 0;
 						int length = 0;
 
 						X509_EXTENSION* ex = X509_get_ext(pTemp, k);
 						if (ex)
 							{
 							ASN1_STRING *pString = X509_EXTENSION_get_data(ex);
-							length = ASN1_STRING_to_UTF8((unsigned char**)&pBuffer, pString);
+							length = ASN1_STRING_to_UTF8(&pBuffer, pString);
 							//i2t_ASN1_OBJECT(&pBuffer, length, obj)
 
 							// -1 indicates an error.
 							if ( length < 0 )
 								continue;
 
-							StringVal* value = new StringVal(length, pBuffer);
+							StringVal* value = new StringVal(length, (char*)pBuffer);
 							BifEvent::generate_x509_extension(bro_analyzer(),
 										bro_analyzer()->Conn(), value);
 							OPENSSL_free(pBuffer);