diff --git a/src/sniffer.c b/src/sniffer.c
index d4d65de773..21440db659 100644
--- a/src/sniffer.c
+++ b/src/sniffer.c
@@ -1824,7 +1824,7 @@ static int SetNamedPrivateKey(const char* name, const char* address, int port,
     if (serverIp.ip4 == XINADDR_NONE) {
     #ifdef FUSION_RTOS
         if (XINET_PTON(AF_INET6, address, serverIp.ip6,
-                       sizeof(serverIp.ip4)) == 1)
+                       sizeof(serverIp.ip6)) == 1)
     #elif defined(FREESCALE_MQX)
         if (XINET_PTON(AF_INET6, address, serverIp.ip6,
                        sizeof(serverIp.ip6)) == RTCS_OK)
@@ -7658,7 +7658,7 @@ static int addKeyLogSnifferServerHelper(const char* address,
     if (serverIp.ip4 == XINADDR_NONE) {
     #ifdef FUSION_RTOS
         if (XINET_PTON(AF_INET6, address, serverIp.ip6,
-                       sizeof(serverIp.ip4)) == 1)
+                       sizeof(serverIp.ip6)) == 1)
     #elif defined(FREESCALE_MQX)
         if (XINET_PTON(AF_INET6, address, serverIp.ip6,
                        sizeof(serverIp.ip6)) == RTCS_OK)
@@ -7786,7 +7786,7 @@ int ssl_RemoveSession(const char* clientIp, int clientPort,
     if (clientAddr.ip4 == XINADDR_NONE) {
     #ifdef FUSION_RTOS
         if (XINET_PTON(AF_INET6, clientIp, clientAddr.ip6,
-                       sizeof(clientAddr.ip4)) == 1)
+                       sizeof(clientAddr.ip6)) == 1)
     #elif defined(FREESCALE_MQX)
         if (XINET_PTON(AF_INET6, clientIp, clientAddr.ip6,
                        sizeof(clientAddr.ip6)) == RTCS_OK)
@@ -7808,7 +7808,7 @@ int ssl_RemoveSession(const char* clientIp, int clientPort,
     if (serverAddr.ip4 == XINADDR_NONE) {
     #ifdef FUSION_RTOS
         if (XINET_PTON(AF_INET6, serverIp, serverAddr.ip6,
-                       sizeof(serverAddr.ip4)) == 1)
+                       sizeof(serverAddr.ip6)) == 1)
     #elif defined(FREESCALE_MQX)
         if (XINET_PTON(AF_INET6, clientIp, clientAddr.ip6,
                        sizeof(clientAddr.ip6)) == RTCS_OK)