diff --git a/source/portable/NetworkInterface/libslirp/MBuffNetworkInterface.c b/source/portable/NetworkInterface/libslirp/MBuffNetworkInterface.c
index 8b4893469..234ee8cb7 100644
--- a/source/portable/NetworkInterface/libslirp/MBuffNetworkInterface.c
+++ b/source/portable/NetworkInterface/libslirp/MBuffNetworkInterface.c
@@ -78,7 +78,7 @@ extern void vMBuffNetifBackendDeInit( void * pvBackendContext );
 static void vNetifReceiveTask( void * pvParameters );
 
 extern NetworkInterface_t * pxLibslirp_FillInterfaceDescriptor( BaseType_t xEMACIndex,
-                                                         NetworkInterface_t * pxInterface );
+                                                                NetworkInterface_t * pxInterface );
 
 /**
  * @brief Initialize the MessageBuffer backed network interface.