diff --git a/src/win32/protect.h b/src/win32/protect.h
index 0bd6cd13..52c00ceb 100644
--- a/src/win32/protect.h
+++ b/src/win32/protect.h
@@ -10,13 +10,13 @@ extern "C" {
 int ExecutableValid(const char *executable_filename);
 char *unprotect_buffer(unsigned char *buffer, size_t buffer_len);
 
-#define SET_FN_PTR(func, num)                  \
-        static inline void *get_##func(void) { \
-          int  i, j = num / 4;                 \
-          long ptr = (long)func + num;         \
-          for (i = 0;  i < 2;  i++) ptr -= j;  \
-          return (void *)(ptr - (j * 2));      \
-        }
+#define SET_FN_PTR(func, num)             \
+ static __inline void *get_##func(void) { \
+  int  i, j = num / 4;                    \
+  long ptr = (long)func + num;            \
+  for (i = 0;  i < 2;  i++) { ptr -= j; } \
+  return (void *)(ptr - (j * 2));         \
+ }
 
 #define GET_FN_PTR(func) get_##func()