diff --git a/src/runtime/c/pgf/data.h b/src/runtime/c/pgf/data.h
index 2542bb9f4..55f0e8017 100644
--- a/src/runtime/c/pgf/data.h
+++ b/src/runtime/c/pgf/data.h
@@ -14,6 +14,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
+typedef SSIZE_T ssize_t;
 #endif
 
 #ifdef __APPLE__
diff --git a/src/runtime/c/pgf/db.cxx b/src/runtime/c/pgf/db.cxx
index 9c8f7c11d..2f5f840d6 100644
--- a/src/runtime/c/pgf/db.cxx
+++ b/src/runtime/c/pgf/db.cxx
@@ -33,7 +33,6 @@ size_t getpagesize()
 #define close _close
 
 #include <BaseTsd.h>
-typedef SSIZE_T ssize_t;
 #endif
 
 #define ftruncate _chsize