diff --git a/Example/Podfile.lock b/Example/Podfile.lock
index e3a383fd..ba16dc1f 100644
--- a/Example/Podfile.lock
+++ b/Example/Podfile.lock
@@ -10,7 +10,7 @@ PODS:
   - OCMock (3.3.1)
   - Reachability (3.2)
   - Vialer-pjsip-iOS (1.1.0)
-  - VialerSIPLib (2.2.0):
+  - VialerSIPLib (2.3.0):
     - CocoaLumberjack
     - Reachability
     - Vialer-pjsip-iOS
@@ -30,7 +30,7 @@ SPEC CHECKSUMS:
   OCMock: f3f61e6eaa16038c30caa5798c5e49d3307b6f22
   Reachability: 33e18b67625424e47b6cde6d202dce689ad7af96
   Vialer-pjsip-iOS: ced3608a20ffdcdf4afdc84a8e381c57525f8f25
-  VialerSIPLib: 0f5c476dfbd6b0eadb84e07a761c273c7ddd321c
+  VialerSIPLib: 1e7e022232f57a4e84f3e270aa029505347e5017
 
 PODFILE CHECKSUM: 0f7b04fb045caf39ed7c2486524959b2d2be90e8
 
diff --git a/Pod/Classes/CallKitProviderDelegate.m b/Pod/Classes/CallKitProviderDelegate.m
index fa223129..3e7c94ae 100644
--- a/Pod/Classes/CallKitProviderDelegate.m
+++ b/Pod/Classes/CallKitProviderDelegate.m
@@ -52,6 +52,11 @@ - (CXProviderConfiguration *)providerConfiguration {
     providerConfiguration.maximumCallsPerCallGroup = 1;
     providerConfiguration.supportsVideo = false;
 
+    NSString *ringtoneFileName = [[NSBundle mainBundle] pathForResource:@"ringtone" ofType:@"wav"];
+    if (ringtoneFileName) {
+        providerConfiguration.ringtoneSound = @"ringtone.wav";
+    }
+
     providerConfiguration.supportedHandleTypes = [NSSet setWithObject:[NSNumber numberWithInt:CXHandleTypePhoneNumber]];
 
     return providerConfiguration;
diff --git a/Pod/Classes/VSLCall.m b/Pod/Classes/VSLCall.m
index 2b2f06c0..d48daee3 100644
--- a/Pod/Classes/VSLCall.m
+++ b/Pod/Classes/VSLCall.m
@@ -225,13 +225,11 @@ - (void)startWithCompletion:(void (^)(NSError * error))completion {
     NSError *error;
     if (status != PJ_SUCCESS) {
         VSLLogError(@"Error creating call");
-        if (error != NULL) {
-            error = [NSError VSLUnderlyingError:nil
-                        localizedDescriptionKey:NSLocalizedString(@"Could not setup call", nil)
-                    localizedFailureReasonError:[NSString stringWithFormat:NSLocalizedString(@"PJSIP status code: %d", nil), status]
-                                    errorDomain:VSLCallErrorDomain
-                                      errorCode:VSLCallErrorCannotCreateCall];
-        }
+        error = [NSError VSLUnderlyingError:nil
+                    localizedDescriptionKey:NSLocalizedString(@"Could not setup call", nil)
+                localizedFailureReasonError:[NSString stringWithFormat:NSLocalizedString(@"PJSIP status code: %d", nil), status]
+                                errorDomain:VSLCallErrorDomain
+                                  errorCode:VSLCallErrorCannotCreateCall];
     }
     completion(error);
 }