diff --git a/Modules/md5module.c b/Modules/md5module.c
index 208930d..ec29452 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -38,7 +38,8 @@ typedef PY_LONG_LONG MD5_INT64; /* 64-bit integer */
 
 struct md5_state {
     MD5_INT64 length;
-    MD5_INT32 state[4], curlen;
+    MD5_INT32 state[4];
+    Py_ssize_t curlen;
     unsigned char buf[MD5_BLOCKSIZE];
 };
 
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index b25bd44..e8b6c3a 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -38,7 +38,8 @@ typedef PY_LONG_LONG SHA1_INT64;        /* 64-bit integer */
 
 struct sha1_state {
     SHA1_INT64 length;
-    SHA1_INT32 state[5], curlen;
+    SHA1_INT32 state[5];
+    Py_ssize_t curlen;
     unsigned char buf[SHA1_BLOCKSIZE];
 };
 
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index 8617210..f804727 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -51,7 +51,7 @@ typedef struct {
     SHA_INT32 count_lo, count_hi;       /* 64-bit bit count */
     SHA_BYTE data[SHA_BLOCKSIZE];       /* SHA data buffer */
     int Endianness;
-    int local;                          /* unprocessed amount in data */
+    Py_ssize_t local;                   /* unprocessed amount in data */
     int digestsize;
 } SHAobject;
 
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
index 0faaf5c..a95a88b 100644
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -53,7 +53,7 @@ typedef struct {
     SHA_INT32 count_lo, count_hi;       /* 64-bit bit count */
     SHA_BYTE data[SHA_BLOCKSIZE];       /* SHA data buffer */
     int Endianness;
-    int local;                          /* unprocessed amount in data */
+    Py_ssize_t local;                   /* unprocessed amount in data */
     int digestsize;
 } SHAobject;