diff --git a/res/values-he b/res/values-he
new file mode 120000
index 000000000..6fe8b4958
--- /dev/null
+++ b/res/values-he
@@ -0,0 +1 @@
+values-iw
\ No newline at end of file
diff --git a/res/values-id b/res/values-id
new file mode 120000
index 000000000..9ea8dda4b
--- /dev/null
+++ b/res/values-id
@@ -0,0 +1 @@
+values-in
\ No newline at end of file
diff --git a/src/net/java/otr4j/crypto/SM.java b/src/net/java/otr4j/crypto/SM.java
index c91447185..af20ada2b 100644
--- a/src/net/java/otr4j/crypto/SM.java
+++ b/src/net/java/otr4j/crypto/SM.java
@@ -183,7 +183,7 @@ public static BigInteger[] unserialize(byte[] bytes) throws SMException {
      * element
      */
     public static boolean checkGroupElem(BigInteger g) {
-        return !(g.compareTo(BigInteger.valueOf(2)) > 0 && g.compareTo(SM.MODULUS_MINUS_2) < 0);
+        return g.compareTo(BigInteger.valueOf(2)) < 0 || g.compareTo(SM.MODULUS_MINUS_2) > 0;
     }
 
     /**
@@ -191,7 +191,7 @@ public static boolean checkGroupElem(BigInteger g) {
      * exponent
      */
     public static boolean checkExpon(BigInteger x) {
-        return !(x.compareTo(BigInteger.ONE) > 0 && x.compareTo(SM.ORDER_S) <= 0);
+        return x.compareTo(BigInteger.ONE) < 0 || x.compareTo(SM.ORDER_S) >= 0;
     }
 
     /**