diff --git a/compat.h b/compat.h
index 7d3f331..bc3e5a2 100644
--- a/compat.h
+++ b/compat.h
@@ -699,4 +699,14 @@ unsigned long long strtoul(const char *cp, char **endp, unsigned int base)
 	return result;
 }
 
+/* Copy from 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo
+ * keyword for switch/case use") */
+#ifndef fallthrough
+# if __has_attribute(__fallthrough__)
+#  define fallthrough			__attribute__((__fallthrough__))
+# else
+#  define fallthrough			do {} while (0)  /* fallthrough */
+# endif
+#endif
+
 #endif /* COMPAT_NETFLOW_H */
diff --git a/murmur3.h b/murmur3.h
index 4e3377b..50d8b11 100644
--- a/murmur3.h
+++ b/murmur3.h
@@ -32,8 +32,8 @@ static inline uint32_t murmur3(const void *key, const uint32_t len, const uint32
 	}
 	tail = (const uint8_t*)blocks;
 	switch (len & 3) {
-		case 3: k1 ^= tail[2] << 16; /* FALLTHROUGH */
-		case 2: k1 ^= tail[1] << 8;  /* FALLTHROUGH */
+		case 3: k1 ^= tail[2] << 16; fallthrough;
+		case 2: k1 ^= tail[1] << 8;  fallthrough;
 		case 1: k1 ^= tail[0];
 			h1 ^= rotl32(k1 * c1, 15) * c2;
 	}
diff --git a/pkt_netflow.c b/pkt_netflow.c
index 85acfcd..fcfaa7e 100644
--- a/pkt_netflow.c
+++ b/pkt_netflow.c
@@ -2118,7 +2118,7 @@ static int parse_sampler(char *ptr)
 		printk(KERN_ERR "pkt_netflow: sampler parse error (%s '%s').\n",
 		    "unknown mode", ptr);
 		ret = -EINVAL;
-		/* FALLTHROUGH */
+		fallthrough;
 	case '\0': /* empty */
 	case 'n':  /* none */
 	case 'o':  /* off */
@@ -3511,7 +3511,7 @@ static inline void add_tpl_field(__u8 *ptr, const int type, const struct pkt_net
 			      put_unaligned_be16(nf->options, ptr); break;
 	case SRC_MASK:	               *ptr = nf->s_mask; break;
 	case DST_MASK:	               *ptr = nf->d_mask; break;
-	case icmpTypeCodeIPv4:	/*FALLTHROUGH*/
+	case icmpTypeCodeIPv4:	fallthrough;
 	case icmpTypeCodeIPv6:	put_unaligned(nf->tuple.d_port, (__be16 *)ptr); break;
 	case MUL_IGMP_TYPE:            *ptr = nf->tuple.d_port; break;
 	case flowEndReason: 	       *ptr = nf->flowEndReason; break;