2 files changed, 2 insertions, 2 deletions
diff --git a/src/include/port.h b/src/include/port.h
index 672b880d40b..af604fddbe7 100644
--- a/src/include/port.h
+++ b/src/include/port.h
@@ -418,7 +418,7 @@ extern FILE *pgwin32_popen(const char *command, const char *type);
 
 /* Type to use with fseeko/ftello */
 #ifndef WIN32					/* WIN32 is handled in port/win32_port.h */
-#define pgoff_t off_t
+typedef off_t pgoff_t;
 #endif
 
 #ifndef HAVE_GETPEEREID
diff --git a/src/include/port/win32_port.h b/src/include/port/win32_port.h
index 8194714976f..0f4b645f9af 100644
--- a/src/include/port/win32_port.h
+++ b/src/include/port/win32_port.h
@@ -194,7 +194,7 @@ extern DWORD pgwin32_get_file_type(HANDLE hFile);
  * with 64-bit offsets.  Also, fseek() might not give an error for unseekable
  * streams, so harden that function with our version.
  */
-#define pgoff_t __int64
+typedef __int64 pgoff_t;
 
 #ifdef _MSC_VER
 extern int	_pgfseeko64(FILE *stream, pgoff_t offset, int origin);