diff --git a/lib/db_x509req.cpp b/lib/db_x509req.cpp
index 0bfde90b..be7d97aa 100644
--- a/lib/db_x509req.cpp
+++ b/lib/db_x509req.cpp
@@ -32,7 +32,10 @@ dbheaderList db_x509req::getHeaders()
 		new dbheader(HD_req_unstr_name, false, tr("Unstructured name"),
 			QString(OBJ_nid2ln(NID_pkcs9_unstructuredName))) <<
 		new dbheader(HD_req_chall_pass, false, tr("Challenge password"),
-			 QString(OBJ_nid2ln(NID_pkcs9_challengePassword)));
+			 QString(OBJ_nid2ln(NID_pkcs9_challengePassword))) <<
+		new dbheader(HD_req_certs, true, tr("x509 count"),
+			 tr("Number of certificates in the database with the same public key"));
+
 	return h;
 }
 
@@ -149,6 +152,12 @@ void db_x509req::signReq(QModelIndex index)
 	emit newCert(req);
 }
 
+void db_x509req::resetX509count()
+{
+	foreach(pki_x509req *r, getAllRequests())
+		r->resetX509count();
+}
+
 QList<pki_x509req *> db_x509req::getAllRequests()
 {
 	return sqlSELECTpki<pki_x509req>("SELECT item FROM requests");
diff --git a/lib/db_x509req.h b/lib/db_x509req.h
index 032798ba..bd9aed9e 100644
--- a/lib/db_x509req.h
+++ b/lib/db_x509req.h
@@ -30,6 +30,7 @@ class db_x509req: public db_x509super
 		void toRequest(QModelIndex index);
 		void load();
 		QList<pki_x509req*> getAllRequests();
+		void resetX509count();
 
 	public slots:
 		void newItem(pki_temp *temp, pki_x509req *orig = NULL);
diff --git a/lib/headerlist.h b/lib/headerlist.h
index 118e7c06..4fd9060b 100644
--- a/lib/headerlist.h
+++ b/lib/headerlist.h
@@ -44,6 +44,7 @@
 #define HD_req_signed -20
 #define HD_req_unstr_name -21
 #define HD_req_chall_pass -22
+#define HD_req_certs -23
 //#define HD_temp_type -30
 
 #define HD_crl_signer -40
diff --git a/lib/pki_base.cpp b/lib/pki_base.cpp
index 53c9073f..6b868e8e 100644
--- a/lib/pki_base.cpp
+++ b/lib/pki_base.cpp
@@ -345,7 +345,7 @@ bool pki_base::compare(const pki_base *ref) const
 	return ret;
 }
 
-/* Signed 32 bit interger */
+/* Unsigned 32 bit integer */
 unsigned pki_base::hash(QByteArray ba)
 {
 	unsigned char md[EVP_MAX_MD_SIZE];
@@ -356,7 +356,7 @@ unsigned pki_base::hash(QByteArray ba)
 		((unsigned)md[2]<<16L) | ((unsigned)md[3]<<24L)
 		) & 0x7fffffffL;
 }
-unsigned pki_base::hash()
+unsigned pki_base::hash() const
 {
 	return hash(i2d());
 }
diff --git a/lib/pki_base.h b/lib/pki_base.h
index fbe6b711..34a6c2e0 100644
--- a/lib/pki_base.h
+++ b/lib/pki_base.h
@@ -172,7 +172,7 @@ class pki_base : public QObject
 		}
 		virtual void restoreSql(const QSqlRecord &rec);
 		QSqlError sqlItemNotFound(QVariant sqlId) const;
-		unsigned hash();
+		unsigned hash() const;
 		QString pki_source_name() const;
 		QString get_dump_filename(const QString &dir, QString ext);
 		void selfComment(QString msg);
diff --git a/lib/pki_x509.cpp b/lib/pki_x509.cpp
index cd651efe..042363f8 100644
--- a/lib/pki_x509.cpp
+++ b/lib/pki_x509.cpp
@@ -94,6 +94,7 @@ QSqlError pki_x509::insertSqlData()
 	q.bindValue(5, (int)isCA());
 	q.bindValue(6, i2d_b64());
 	q.exec();
+	MainWindow::reqs->resetX509count();
 	if (!isCA())
 		return q.lastError();
 
@@ -171,6 +172,7 @@ QSqlError pki_x509::deleteSqlData()
 	foreach(pki_base *pki, list)
 		AffectedItems(pki->getSqlItemId());
 
+	MainWindow::reqs->resetX509count();
 	return q.lastError();
 }
 
diff --git a/lib/pki_x509req.cpp b/lib/pki_x509req.cpp
index 1b59b981..b4f3533a 100644
--- a/lib/pki_x509req.cpp
+++ b/lib/pki_x509req.cpp
@@ -6,10 +6,12 @@
  */
 
 
+#include <typeinfo>
 
 #include "pki_x509.h"
 #include "pki_evp.h"
 #include "func.h"
+#include "db_base.h"
 #include "x509name.h"
 #include "exception.h"
 #include <openssl/bio.h>
@@ -28,6 +30,7 @@ pki_x509req::pki_x509req(const QString name)
 	pki_openssl_error();
 	pkiType=x509_req;
 	done = false;
+	resetX509count();
 }
 
 pki_x509req::~pki_x509req()
@@ -312,6 +315,40 @@ QString pki_x509req::getAttribute(int nid) const
 	return ret.join(", ");
 }
 
+int pki_x509req::issuedCerts() const
+{
+	XSqlQuery q;
+	int count = 0;
+
+	if (x509count != -1)
+		return x509count;
+
+	SQL_PREPARE(q, "SELECT item FROM x509super WHERE key_hash=?");
+	q.bindValue(0, pubHash());
+	q.exec();
+	if (q.lastError().isValid())
+		return 0;
+	pki_key *k = getPubKey();
+	if (!k)
+		return 0;
+	while (q.next()) {
+		pki_x509super *x;
+		x = db_base::lookupPki<pki_x509super>(q.value(0));
+		if (!x) {
+			qDebug("x509 with id %d not found",
+				q.value(0).toInt());
+			continue;
+		}
+		if (typeid(*x) == typeid(pki_x509) && x->compareRefKey(k))
+			count++;
+		qDebug() << "Req:" << getIntName() << "Cert with hash"
+			 << x->getIntName() << count;
+	}
+	delete k;
+	x509count = count;
+	return count;
+}
+
 QVariant pki_x509req::column_data(const dbheader *hd) const
 {
 	switch (hd->id) {
@@ -321,6 +358,8 @@ QVariant pki_x509req::column_data(const dbheader *hd) const
 		return getAttribute(NID_pkcs9_unstructuredName);
 	case HD_req_chall_pass:
 		return getAttribute(NID_pkcs9_challengePassword);
+	case HD_req_certs:
+		return QVariant(issuedCerts());
 	}
 	return pki_x509super::column_data(hd);
 }
diff --git a/lib/pki_x509req.h b/lib/pki_x509req.h
index 20f884b0..94a5ffcd 100644
--- a/lib/pki_x509req.h
+++ b/lib/pki_x509req.h
@@ -24,6 +24,7 @@ class pki_x509req : public pki_x509super
 {
 		Q_OBJECT
 
+		mutable int x509count;
 	protected:
 		X509_REQ *request;
 		bool done;
@@ -46,6 +47,7 @@ class pki_x509req : public pki_x509super
 		}
 		void addAttribute(int nid, QString content);
 		QString getAttribute(int nid) const;
+		int issuedCerts() const;
 
 		int verify() const;
 		pki_key *getPubKey() const;
@@ -58,9 +60,9 @@ class pki_x509req : public pki_x509super
 		{
 			done = d;
 		}
-		bool getDone()
+		void resetX509count() const
 		{
-			return done;
+			x509count = -1;
 		}
 		virtual QString getMsg(msg_type msg) const;
 		void d2i(QByteArray &ba);
diff --git a/lib/pki_x509super.cpp b/lib/pki_x509super.cpp
index 08d445bb..fadd38f9 100644
--- a/lib/pki_x509super.cpp
+++ b/lib/pki_x509super.cpp
@@ -88,7 +88,7 @@ pki_key *pki_x509super::getRefKey() const
 	return privkey;
 }
 
-unsigned pki_x509super::pubHash()
+unsigned pki_x509super::pubHash() const
 {
 	unsigned hash = 0;
 	if (privkey) {
diff --git a/lib/pki_x509super.h b/lib/pki_x509super.h
index f55fedb4..594d3e0c 100644
--- a/lib/pki_x509super.h
+++ b/lib/pki_x509super.h
@@ -36,7 +36,7 @@ class pki_x509super : public pki_x509name
 	public:
 		pki_x509super(const QString name = "");
 		virtual ~pki_x509super();
-		unsigned pubHash();
+		unsigned pubHash() const;
 		virtual pki_key *getPubKey() const = 0;
 		virtual extList getV3ext() const = 0;
 		virtual QString getSigAlg() const;