diff --git a/src/fsfw/osal/common/TcpIpBase.cpp b/src/fsfw/osal/common/TcpIpBase.cpp
index 486a5171..3e760f0e 100644
--- a/src/fsfw/osal/common/TcpIpBase.cpp
+++ b/src/fsfw/osal/common/TcpIpBase.cpp
@@ -41,6 +41,7 @@ int TcpIpBase::closeSocket(socket_t socket) {
 #elif defined(PLATFORM_UNIX)
   return close(socket);
 #endif
+  return -1;
 }
 
 int TcpIpBase::getLastSocketError() {
@@ -49,4 +50,5 @@ int TcpIpBase::getLastSocketError() {
 #elif defined(PLATFORM_UNIX)
   return errno;
 #endif
+  return 0;
 }