diff --git a/Modules/md5module.c b/Modules/md5module.c
index 7dc38ea..bb91b6c 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -439,7 +439,7 @@
 static PyObject *
 MD5_get_name(PyObject *self, void *closure)
 {
-    return PyUnicode_FromStringAndSize("MD5", 3);
+    return PyUnicode_FromStringAndSize("md5", 3);
 }
 
 static PyObject *
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index e7c7ea6..403194c 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -411,7 +411,7 @@
 static PyObject *
 SHA1_get_name(PyObject *self, void *closure)
 {
-    return PyUnicode_FromStringAndSize("SHA1", 4);
+    return PyUnicode_FromStringAndSize("sha1", 4);
 }
 
 static PyObject *
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index 767bfac..e60111a 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -501,9 +501,9 @@
 SHA256_get_name(PyObject *self, void *closure)
 {
     if (((SHAobject *)self)->digestsize == 32)
-        return PyUnicode_FromStringAndSize("SHA256", 6);
+        return PyUnicode_FromStringAndSize("sha256", 6);
     else
-        return PyUnicode_FromStringAndSize("SHA224", 6);
+        return PyUnicode_FromStringAndSize("sha224", 6);
 }
 
 static PyGetSetDef SHA_getseters[] = {
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
index 66c2c49..2841eab 100644
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -567,9 +567,9 @@
 SHA512_get_name(PyObject *self, void *closure)
 {
     if (((SHAobject *)self)->digestsize == 64)
-        return PyUnicode_FromStringAndSize("SHA512", 6);
+        return PyUnicode_FromStringAndSize("sha512", 6);
     else
-        return PyUnicode_FromStringAndSize("SHA384", 6);
+        return PyUnicode_FromStringAndSize("sha384", 6);
 }
 
 static PyGetSetDef SHA_getseters[] = {