diff --git a/mingw-w64-headers/crt/_mingw.h.in b/mingw-w64-headers/crt/_mingw.h.in
index eeebdc6..9580d37 100644
--- a/mingw-w64-headers/crt/_mingw.h.in
+++ b/mingw-w64-headers/crt/_mingw.h.in
@@ -391,7 +391,7 @@
 #ifdef _WIN64
 __MINGW_EXTENSION typedef __int64 ssize_t;
 #else
-typedef long ssize_t;
+typedef int ssize_t;
 #endif /* _WIN64 */
 #endif /* _SSIZE_T_DEFINED */
 
diff --git a/mingw-w64-headers/crt/io.h b/mingw-w64-headers/crt/io.h
index bbf7127..8aa1279 100644
--- a/mingw-w64-headers/crt/io.h
+++ b/mingw-w64-headers/crt/io.h
@@ -162,7 +162,7 @@
 #ifdef _WIN64
   __MINGW_EXTENSION typedef __int64 ssize_t;
 #else
-  typedef long ssize_t;
+  typedef int ssize_t;
 #endif /* _WIN64 */
 #endif /* _SSIZE_T_DEFINED */
 
diff --git a/mingw-w64-headers/crt/time.h b/mingw-w64-headers/crt/time.h
index e13a43c..f1c8d1f 100644
--- a/mingw-w64-headers/crt/time.h
+++ b/mingw-w64-headers/crt/time.h
@@ -67,7 +67,7 @@
 #ifdef _WIN64
   __MINGW_EXTENSION typedef __int64 ssize_t;
 #else
-  typedef long ssize_t;
+  typedef int ssize_t;
 #endif
 #endif
 
diff --git a/mingw-w64-headers/include/rpcndr.h b/mingw-w64-headers/include/rpcndr.h
index 9732806..2016e6b 100644
--- a/mingw-w64-headers/include/rpcndr.h
+++ b/mingw-w64-headers/include/rpcndr.h
@@ -78,7 +78,7 @@
 #ifdef _WIN64
   __MINGW_EXTENSION typedef __int64 ssize_t;
 #else
-  typedef long ssize_t;
+  typedef int ssize_t;
 #endif
 #endif
 
diff --git a/mingw-w64-headers/include/strsafe.h b/mingw-w64-headers/include/strsafe.h
index 528a0ca..33acc06 100644
--- a/mingw-w64-headers/include/strsafe.h
+++ b/mingw-w64-headers/include/strsafe.h
@@ -32,7 +32,7 @@
 #ifdef _WIN64
 __MINGW_EXTENSION typedef __int64 ssize_t;
 #else
-typedef long ssize_t;
+typedef int ssize_t;
 #endif
 #endif