diff --git a/scripts/coccinelle/shorthand_operator.cocci b/scripts/coccinelle/shorthand_operator.cocci
new file mode 100644
index 0000000000..f7019d4040
--- /dev/null
+++ b/scripts/coccinelle/shorthand_operator.cocci
@@ -0,0 +1,12 @@
+@@
+identifier data;
+constant x;
+@@
+
+(
+- data = data + x
++ data += x
+|
+- data = data - x
++ data -= x
+)
diff --git a/zebra/kernel_socket.c b/zebra/kernel_socket.c
index c2812aa47b..7cdd6ef84e 100644
--- a/zebra/kernel_socket.c
+++ b/zebra/kernel_socket.c
@@ -556,7 +556,7 @@ int ifm_read(struct if_msghdr *ifm)
 	 * is 12 bytes larger than the 32 bit version.
 	 */
 	if (((struct sockaddr *)cp)->sa_family == AF_UNSPEC)
-		cp = cp + 12;
+		cp += 12;
 #endif
 
 	/* Look up for RTA_IFP and skip others. */