diff --git a/src/transform_aes.c b/src/transform_aes.c
index 2a3ab23..3a285c7 100644
--- a/src/transform_aes.c
+++ b/src/transform_aes.c
@@ -41,10 +41,11 @@ static int transop_deinit_aes (n2n_trans_op_t *arg) {
 
     transop_aes_t *priv = (transop_aes_t *)arg->priv;
 
-    if(priv)
+    if(priv) {
         if(priv->ctx)
             aes_deinit(priv->ctx);
         free(priv);
+    }
 
     return 0;
 }
diff --git a/src/transform_cc20.c b/src/transform_cc20.c
index 445627f..fe6eb8b 100644
--- a/src/transform_cc20.c
+++ b/src/transform_cc20.c
@@ -33,10 +33,11 @@ static int transop_deinit_cc20 (n2n_trans_op_t *arg) {
 
     transop_cc20_t *priv = (transop_cc20_t *)arg->priv;
 
-    if(priv)
+    if(priv) {
         if(priv->ctx)
             cc20_deinit(priv->ctx);
         free(priv);
+    }
 
     return 0;
 }
diff --git a/src/transform_speck.c b/src/transform_speck.c
index 3b126cc..a633844 100644
--- a/src/transform_speck.c
+++ b/src/transform_speck.c
@@ -33,10 +33,11 @@ static int transop_deinit_speck (n2n_trans_op_t *arg) {
 
     transop_speck_t *priv = (transop_speck_t *)arg->priv;
 
-    if(priv)
+    if(priv) {
         if(priv->ctx)
             speck_deinit(priv->ctx);
         free(priv);
+    }
 
     return 0;
 }
diff --git a/src/transform_tf.c b/src/transform_tf.c
index 4adf6bc..2900639 100644
--- a/src/transform_tf.c
+++ b/src/transform_tf.c
@@ -41,10 +41,11 @@ static int transop_deinit_tf (n2n_trans_op_t *arg) {
 
     transop_tf_t *priv = (transop_tf_t *)arg->priv;
 
-    if(priv)
+    if(priv) {
         if(priv->ctx)
             tf_deinit(priv->ctx);
         free(priv);
+    }
 
     return 0;
 }