diff --git a/ixwebsocket/IXNetSystem.cpp b/ixwebsocket/IXNetSystem.cpp
index d9ad45b2..2b9baa40 100644
--- a/ixwebsocket/IXNetSystem.cpp
+++ b/ixwebsocket/IXNetSystem.cpp
@@ -8,12 +8,12 @@
 
 // mingw does not have those
 #if defined(_WIN32) && defined(__GNUC__)
-const char* inet_ntop(int af, const void* restrict src, char* restrict dst, socklen_t size)
+const char* inet_ntop(int af, const void* src, char* dst, socklen_t size)
 {
     return nullptr;
 }
 
-int inet_pton(int af, const char* restrict src, void* restrict dst)
+int inet_pton(int af, const char* src, void* dst)
 {
     return -1;
 }
diff --git a/ixwebsocket/IXNetSystem.h b/ixwebsocket/IXNetSystem.h
index 948286ac..384e9b1b 100644
--- a/ixwebsocket/IXNetSystem.h
+++ b/ixwebsocket/IXNetSystem.h
@@ -55,8 +55,8 @@ struct pollfd
 
 // mingw does not have those
 #if defined(_WIN32) && defined(__GNUC__)
-const char* inet_ntop(int af, const void* restrict src, char* restrict dst, socklen_t size);
-int inet_pton(int af, const char* restrict src, void* restrict dst);
+const char* inet_ntop(int af, const void* src, char* dst, socklen_t size);
+int inet_pton(int af, const char* src, void* dst);
 #endif
 
 namespace ix