diff --git a/src/netif/ppp/ppp.c b/src/netif/ppp/ppp.c
index 48d07434..55a5a47a 100644
--- a/src/netif/ppp/ppp.c
+++ b/src/netif/ppp/ppp.c
@@ -166,7 +166,7 @@ typedef struct PPPControl_s {
   ext_accm outACCM;             /* Async-Ctl-Char-Map for output. */
 #if PPPOS_SUPPORT && VJ_SUPPORT
   int  vjEnabled;               /* Flag indicating VJ compression enabled. */
-  struct vjcompress vjComp;     /* Van Jabobsen compression header. */
+  struct vjcompress vjComp;     /* Van Jacobson compression header. */
 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
 
   struct netif netif;
diff --git a/src/netif/ppp/vj.c b/src/netif/ppp/vj.c
index 814ea72c..694b7027 100644
--- a/src/netif/ppp/vj.c
+++ b/src/netif/ppp/vj.c
@@ -136,7 +136,7 @@ vj_compress_init(struct vjcompress *comp)
 }
 
 /*
- * vj_compress_tcp - Attempt to do Van Jacobsen header compression on a
+ * vj_compress_tcp - Attempt to do Van Jacobson header compression on a
  * packet.  This assumes that nb and comp are not null and that the first
  * buffer of the chain contains a valid IP header.
  * Return the VJ type code indicating whether or not the packet was