diff --git a/libnetutil/netutil.h b/libnetutil/netutil.h
index cad25454e..de448a8b6 100644
--- a/libnetutil/netutil.h
+++ b/libnetutil/netutil.h
@@ -165,7 +165,7 @@ struct abstract_ip_hdr {
 #if defined(__GNUC__)
 #define NORETURN __attribute__((noreturn))
 #elif defined(_MSC_VER)
-#define NORETURN __declspec((noreturn))
+#define NORETURN __declspec(noreturn)
 #else
 #define NORETURN
 #endif
diff --git a/nbase/nbase.h b/nbase/nbase.h
index 7a9909d39..67b3f2803 100644
--- a/nbase/nbase.h
+++ b/nbase/nbase.h
@@ -374,7 +374,7 @@ extern "C" int vsnprintf (char *, size_t, const char *, va_list);
 #if defined(__GNUC__)
 #define NORETURN __attribute__((noreturn))
 #elif defined(_MSC_VER)
-#define NORETURN __declspec((noreturn))
+#define NORETURN __declspec(noreturn)
 #else
 #define NORETURN
 #endif
diff --git a/nsock/src/error.h b/nsock/src/error.h
index 60a97bbff..3317191aa 100644
--- a/nsock/src/error.h
+++ b/nsock/src/error.h
@@ -77,7 +77,7 @@
 #if defined(__GNUC__)
 #define NORETURN __attribute__((noreturn))
 #elif defined(_MSC_VER)
-#define NORETURN __declspec((noreturn))
+#define NORETURN __declspec(noreturn)
 #else
 #define NORETURN
 #endif