diff --git a/frontends/rpc/rpc_frontend.cc b/frontends/rpc/rpc_frontend.cc
index 83e1353b0..add17c243 100644
--- a/frontends/rpc/rpc_frontend.cc
+++ b/frontends/rpc/rpc_frontend.cc
@@ -28,14 +28,13 @@
 #include <sys/wait.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+extern char **environ;
 #endif
 
 #include "libs/json11/json11.hpp"
 #include "libs/sha1/sha1.h"
 #include "kernel/yosys.h"
 
-extern char **environ;
-
 YOSYS_NAMESPACE_BEGIN
 
 #if defined(_WIN32)
@@ -238,6 +237,11 @@ struct RpcModule : RTLIL::Module {
 
 #if defined(_WIN32)
 
+#if defined(_MSC_VER)
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#endif
+
 struct HandleRpcServer : RpcServer {
 	HANDLE hsend, hrecv;
 
diff --git a/passes/pmgen/xilinx_dsp.cc b/passes/pmgen/xilinx_dsp.cc
index 11c7e5ea8..3ff921957 100644
--- a/passes/pmgen/xilinx_dsp.cc
+++ b/passes/pmgen/xilinx_dsp.cc
@@ -20,6 +20,7 @@
 
 #include "kernel/yosys.h"
 #include "kernel/sigtools.h"
+#include <deque>
 
 USING_YOSYS_NAMESPACE
 PRIVATE_NAMESPACE_BEGIN