diff --git a/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/presencecheck/iproov/config/IProovConfig.java b/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/presencecheck/iproov/config/IProovConfig.java
index bd8a4f18d..7f5655563 100644
--- a/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/presencecheck/iproov/config/IProovConfig.java
+++ b/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/presencecheck/iproov/config/IProovConfig.java
@@ -172,7 +172,7 @@ private static ReactiveOAuth2AccessTokenResponseClient<OAuth2ClientCredentialsGr
 
     private static WebClient createWebClient(final ExchangeFilterFunction filter, IProovConfigProps configProps, final String logContext) {
         final RestClientConfiguration restClientConfig = configProps.getRestClientConfig();
-        final Integer connectionTimeout = restClientConfig.getConnectionTimeout();
+        final Duration connectionTimeout = restClientConfig.getConnectionTimeout();
         final Duration responseTimeout = restClientConfig.getResponseTimeout();
         final Duration maxIdleTime = Objects.requireNonNull(restClientConfig.getMaxIdleTime(), "maxIdleTime must be specified");
         logger.info("Setting {} connectionTimeout: {}, responseTimeout: {}, maxIdleTime: {}", logContext, connectionTimeout, responseTimeout, maxIdleTime);
@@ -181,7 +181,7 @@ private static WebClient createWebClient(final ExchangeFilterFunction filter, IP
                 .maxIdleTime(maxIdleTime)
                 .build();
         HttpClient httpClient = HttpClient.create(connectionProvider)
-                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectionTimeout)
+                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, Math.toIntExact(connectionTimeout.toMillis()))
                 .responseTimeout(responseTimeout);
 
         if (restClientConfig.isProxyEnabled()) {
diff --git a/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/provider/rest/RestOnboardingProviderAutoConfiguration.java b/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/provider/rest/RestOnboardingProviderAutoConfiguration.java
index d2c121076..fc2838667 100644
--- a/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/provider/rest/RestOnboardingProviderAutoConfiguration.java
+++ b/enrollment-server-onboarding/src/main/java/com/wultra/app/onboardingserver/provider/rest/RestOnboardingProviderAutoConfiguration.java
@@ -65,7 +65,7 @@ public RestClient restClient(
 
         final RestClientConfiguration config = new RestClientConfiguration();
         config.setBaseUrl(url);
-        config.setConnectionTimeout((int) configuration.getConnectionTimeout().toMillis());
+        config.setConnectionTimeout(configuration.getConnectionTimeout());
         config.setResponseTimeout(configuration.getResponseTimeout());
         config.setHandshakeTimeout(configuration.getHandshakeTimeout());
         config.setDefaultHttpHeaders(headers);