diff --git a/library.js b/library.js
index d6b696d..3b8297a 100644
--- a/library.js
+++ b/library.js
@@ -38,39 +38,41 @@
 			master_config = options;
 		});
 
-		samlObj = new passportSAML({
-			    path: master_config.callback_path,
-			    entryPoint: master_config.idp_entry_point,
-			    issuer: master_config.issuer,
-			    callbackUrl: nconf.get('url') + master_config.callback_path,
-			    disableRequestedAuthnContext: true,
-			    identifierFormat: null
-		  	},
-		  	function(profile, done) {
-			console.log("[sso-saml] profile, ", profile);	
-		    	var user = {
-			        nameID: profile.nameID,
-			        nameIDFormat: profile.nameIDFormat,
-			        sn: profile['urn:oid:2.5.4.4'], // sn
-				//sn: profile.sn,
-			        cn: profile['urn:oid:2.5.4.42'], // givenname
-				//cn: profile.cn,
-			        //mail: profile.mail,
-			        //eduPersonAffiliation: profile.eduPersonAffiliation,
-			        email: profile.mail,
-				//email: profile.email,
-			        username: profile['urn:oid:1.3.6.1.4.1.5923.1.1.1.2'], // eduPersonNickname
-				//username: profile.eduPersonNickname
-			    };
+		if (master_config.idp_entry_point && master_config.callback_path && master_config.issuer && master_config.metadata) {
+			samlObj = new passportSAML({
+				    path: master_config.callback_path,
+				    entryPoint: master_config.idp_entry_point,
+				    issuer: master_config.issuer,
+				    callbackUrl: nconf.get('url') + master_config.callback_path,
+				    disableRequestedAuthnContext: true,
+				    identifierFormat: null
+				},
+				function(profile, done) {
+				console.log("[sso-saml] profile, ", profile);
+				var user = {
+				        nameID: profile.nameID,
+				        nameIDFormat: profile.nameIDFormat,
+				        sn: profile['urn:oid:2.5.4.4'], // sn
+					//sn: profile.sn,
+				        cn: profile['urn:oid:2.5.4.42'], // givenname
+					//cn: profile.cn,
+				        //mail: profile.mail,
+				        //eduPersonAffiliation: profile.eduPersonAffiliation,
+				        email: profile.mail,
+					//email: profile.email,
+				        username: profile['urn:oid:1.3.6.1.4.1.5923.1.1.1.2'], // eduPersonNickname
+					//username: profile.eduPersonNickname
+				    };
 
-			    SAML.login(user,function(err, user) {
-					if (err) {
-						return done(err);
-					}
-					done(null, user);
-				});
-		  	}
-		);
+				    SAML.login(user,function(err, user) {
+						if (err) {
+							return done(err);
+						}
+						done(null, user);
+					});
+				}
+			);
+		}
 
 		console.log("[sso-saml] samlObj", samlObj);