diff --git a/powerauth-java-server/src/main/java/io/getlime/security/powerauth/app/server/configuration/PowerAuthServiceConfiguration.java b/powerauth-java-server/src/main/java/io/getlime/security/powerauth/app/server/configuration/PowerAuthServiceConfiguration.java
index f3497da85..55d549a3b 100644
--- a/powerauth-java-server/src/main/java/io/getlime/security/powerauth/app/server/configuration/PowerAuthServiceConfiguration.java
+++ b/powerauth-java-server/src/main/java/io/getlime/security/powerauth/app/server/configuration/PowerAuthServiceConfiguration.java
@@ -22,7 +22,6 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import javax.annotation.PostConstruct;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -30,6 +29,7 @@
 import org.springframework.util.Assert;
 import org.springframework.validation.annotation.Validated;
 
+import javax.annotation.PostConstruct;
 import javax.validation.constraints.Max;
 import javax.validation.constraints.Min;
 
@@ -660,6 +660,6 @@ public void setProximityCheckOtpLength(int proximityCheckOtpLength) {
     @PostConstruct
     void validate() {
         Assert.state(proximityCheckOtpLength >= MINIMAL_PROXIMITY_CHECK_OTP_LENGTH,
-                "Proximity check OTP length %d is smaller then required minimal %d".formatted(proximityCheckOtpLength, MINIMAL_PROXIMITY_CHECK_OTP_LENGTH));
+                String.format("Proximity check OTP length %d is smaller then required minimal %d", proximityCheckOtpLength, MINIMAL_PROXIMITY_CHECK_OTP_LENGTH));
     }
 }