4 files changed, 6 insertions, 6 deletions
diff --git a/src/lib/asn1/asn1_alt_name.cpp b/src/lib/asn1/asn1_alt_name.cpp
index 9e59321f7..131152521 100644
--- a/src/lib/asn1/asn1_alt_name.cpp
+++ b/src/lib/asn1/asn1_alt_name.cpp
@@ -55,7 +55,7 @@ AlternativeName::AlternativeName(const std::string& email_addr,
 void AlternativeName::add_attribute(const std::string& type,
                                     const std::string& str)
    {
-   if(type == "" || str == "")
+   if(type.empty() || str.empty())
       return;
 
    auto range = alt_info.equal_range(type);
@@ -72,7 +72,7 @@ void AlternativeName::add_attribute(const std::string& type,
 void AlternativeName::add_othername(const OID& oid, const std::string& value,
                                     ASN1_Tag type)
    {
-   if(value == "")
+   if(value.empty())
       return;
    multimap_insert(othernames, oid, ASN1_String(value, type));
    }
diff --git a/src/lib/asn1/asn1_oid.cpp b/src/lib/asn1/asn1_oid.cpp
index 2fbc4b27c..3232d24e6 100644
--- a/src/lib/asn1/asn1_oid.cpp
+++ b/src/lib/asn1/asn1_oid.cpp
@@ -18,7 +18,7 @@ namespace Botan {
 */
 OID::OID(const std::string& oid_str)
    {
-   if(oid_str != "")
+   if(!oid_str.empty())
       {
       try
          {
diff --git a/src/lib/asn1/oid_lookup/oids.cpp b/src/lib/asn1/oid_lookup/oids.cpp
index 8ce0ec644..0d1ab58ff 100644
--- a/src/lib/asn1/oid_lookup/oids.cpp
+++ b/src/lib/asn1/oid_lookup/oids.cpp
@@ -109,12 +109,12 @@ void OID_Map::read_cfg(std::istream& cfg, const std::string& source)
       std::getline(cfg, s);
       ++line;
 
-      if(s == "" || s[0] == '#')
+      if(s.empty() || s[0] == '#')
          continue;
 
       s = clean_ws(s.substr(0, s.find('#')));
 
-      if(s == "")
+      if(s.empty())
          continue;
 
       auto eq = s.find("=");
diff --git a/src/lib/asn1/x509_dn.cpp b/src/lib/asn1/x509_dn.cpp
index ff4a73ebb..80bbe81a3 100644
--- a/src/lib/asn1/x509_dn.cpp
+++ b/src/lib/asn1/x509_dn.cpp
@@ -55,7 +55,7 @@ void X509_DN::add_attribute(const std::string& type,
 */
 void X509_DN::add_attribute(const OID& oid, const std::string& str)
    {
-   if(str == "")
+   if(str.empty())
       return;
 
    auto range = dn_info.equal_range(oid);