diff --git a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.c b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.c
index 920882d..76cd4c4 100644
--- a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.c
+++ b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.c
@@ -1,10 +1,10 @@
 #include "lpac-convertor.h"
 
-jobject profile_state_enabled;
-jobject profile_state_disabled;
-jobject profile_class_operational;
-jobject profile_class_provisioning;
-jobject profile_class_testing;
+static jobject profile_state_enabled;
+static jobject profile_state_disabled;
+static jobject profile_class_operational;
+static jobject profile_class_provisioning;
+static jobject profile_class_testing;
 
 static jobject bind_static_field(JNIEnv *env, jclass clazz, const char *name, const char *sig) {
     jfieldID field = (*env)->GetStaticFieldID(env, clazz, name, sig);
diff --git a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.h b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.h
index e8a08be..bfbc1af 100644
--- a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.h
+++ b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-convertor.h
@@ -3,12 +3,6 @@
 #include <jni.h>
 #include <euicc/es10c.h>
 
-jobject profile_state_enabled;
-jobject profile_state_disabled;
-jobject profile_class_operational;
-jobject profile_class_provisioning;
-jobject profile_class_testing;
-
 #define PROFILE_STATE_CLASS "net/typeblog/lpac_jni/ProfileState"
 #define PROFILE_CLASS_CLASS "net/typeblog/lpac_jni/ProfileClass"
 
diff --git a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-jni.c b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-jni.c
index 33a31e5..8ea4efc 100644
--- a/libs/lpac-jni/src/main/jni/lpac-jni/lpac-jni.c
+++ b/libs/lpac-jni/src/main/jni/lpac-jni/lpac-jni.c
@@ -20,7 +20,6 @@ jmethodID string_constructor;
 
 #define LOCAL_PROFILE_INFO_CLASS "net/typeblog/lpac_jni/LocalProfileInfo"
 
-
 jint JNI_OnLoad(JavaVM *vm, void *reserved) {
     jvm = vm;
     LPAC_JNI_SETUP_ENV;