diff --git a/utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/providers/ObjectModelProvider.kt b/utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/providers/ObjectModelProvider.kt
index 7806569f57..332dda6117 100644
--- a/utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/providers/ObjectModelProvider.kt
+++ b/utbot-fuzzers/src/main/kotlin/org/utbot/fuzzer/providers/ObjectModelProvider.kt
@@ -153,7 +153,7 @@ class ObjectModelProvider : ModelProvider {
 
         private fun isAccessible(member: Member, packageName: String?): Boolean {
             return isPublic(member.modifiers) ||
-                    (isPackagePrivate(member.modifiers) && member.declaringClass.`package`.name == packageName)
+                    (packageName != null && isPackagePrivate(member.modifiers) && member.declaringClass.`package`?.name == packageName)
         }
 
         private fun isPackagePrivate(modifiers: Int): Boolean {