diff --git a/src/nt.c b/src/nt.c
index b9133e0..4c8293b 100644
--- a/src/nt.c
+++ b/src/nt.c
@@ -3,8 +3,8 @@
 #include "nt.h"
 #include "win.h"
 
-#define X(return_type, declarators, name, ...) \
-  return_type(declarators* name)(__VA_ARGS__) = NULL;
+#define X(return_type, declarators, name, parameters) \
+  return_type(declarators* name) parameters = NULL;
 NTDLL_IMPORT_LIST(X)
 #undef X
 
@@ -15,10 +15,9 @@ int nt_initialize() {
   if (ntdll == NULL)
     return -1;
 
-#define X(return_type, declarators, name, ...)                               \
-  name =                                                                     \
-      (return_type(declarators*)(__VA_ARGS__)) GetProcAddress(ntdll, #name); \
-  if (name == NULL)                                                          \
+#define X(return_type, declarators, name, parameters)                         \
+  name = (return_type(declarators*) parameters) GetProcAddress(ntdll, #name); \
+  if (name == NULL)                                                           \
     return -1;
   NTDLL_IMPORT_LIST(X)
 #undef X
diff --git a/src/nt.h b/src/nt.h
index 177b40d..fac3919 100644
--- a/src/nt.h
+++ b/src/nt.h
@@ -18,23 +18,23 @@ typedef VOID(NTAPI* PIO_APC_ROUTINE)(PVOID ApcContext,
                                      PIO_STATUS_BLOCK IoStatusBlock,
                                      ULONG Reserved);
 
-#define NTDLL_IMPORT_LIST(X)        \
-  X(NTSTATUS,                       \
-    NTAPI,                          \
-    NtDeviceIoControlFile,          \
-    HANDLE FileHandle,              \
-    HANDLE Event,                   \
-    PIO_APC_ROUTINE ApcRoutine,     \
-    PVOID ApcContext,               \
-    PIO_STATUS_BLOCK IoStatusBlock, \
-    ULONG IoControlCode,            \
-    PVOID InputBuffer,              \
-    ULONG InputBufferLength,        \
-    PVOID OutputBuffer,             \
-    ULONG OutputBufferLength)
+#define NTDLL_IMPORT_LIST(X)         \
+  X(NTSTATUS,                        \
+    NTAPI,                           \
+    NtDeviceIoControlFile,           \
+    (HANDLE FileHandle,              \
+     HANDLE Event,                   \
+     PIO_APC_ROUTINE ApcRoutine,     \
+     PVOID ApcContext,               \
+     PIO_STATUS_BLOCK IoStatusBlock, \
+     ULONG IoControlCode,            \
+     PVOID InputBuffer,              \
+     ULONG InputBufferLength,        \
+     PVOID OutputBuffer,             \
+     ULONG OutputBufferLength))      \
 
-#define X(return_type, declarators, name, ...) \
-  extern return_type(declarators* name)(__VA_ARGS__);
+#define X(return_type, declarators, name, parameters) \
+  extern return_type(declarators* name) parameters;
 NTDLL_IMPORT_LIST(X)
 #undef X