diff --git a/src/core/dhcp.c b/src/core/dhcp.c
index 81b4be27..ad2ad8fd 100644
--- a/src/core/dhcp.c
+++ b/src/core/dhcp.c
@@ -115,7 +115,7 @@
 #define DHCP_OPTION_IDX_T2          5
 #define DHCP_OPTION_IDX_SUBNET_MASK 6
 #define DHCP_OPTION_IDX_ROUTER      7
-#define DHCP_OPTION_IDX_DNS_SERVER	8
+#define DHCP_OPTION_IDX_DNS_SERVER  8
 #define DHCP_OPTION_IDX_MAX         (DHCP_OPTION_IDX_DNS_SERVER + DNS_MAX_SERVERS)
 
 /** Holds the decoded option values, only valid while in dhcp_recv.
diff --git a/src/netif/ppp/pap.c b/src/netif/ppp/pap.c
index ac44e646..78ef490a 100644
--- a/src/netif/ppp/pap.c
+++ b/src/netif/ppp/pap.c
@@ -218,7 +218,7 @@ upap_timeout(void *arg)
         u->us_unit, u->us_timeouttime, u->us_clientstate));
 
   if (u->us_clientstate != UPAPCS_AUTHREQ) {
-	UPAPDEBUG(LOG_INFO, ("upap_timeout: not in AUTHREQ state!\n"));
+    UPAPDEBUG(LOG_INFO, ("upap_timeout: not in AUTHREQ state!\n"));
     return;
   }