diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index bf379f0..991b38a 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2067,7 +2067,7 @@
         SSL_set_SSL_CTX(self->ssl, self->ctx->ctx);
 #endif
     } else {
-        PyErr_SetString(PyExc_TypeError, "The value must be a SSLContext");
+        PyErr_SetString(PyExc_TypeError, "The value must be an SSLContext.");
         return -1;
     }
 
@@ -2726,7 +2726,7 @@
     int result;
 
     if (!PySSLSession_Check(value)) {
-        PyErr_SetString(PyExc_TypeError, "Value is not a SSLSession.");
+        PyErr_SetString(PyExc_TypeError, "Value is not an SSLSession.");
         return -1;
     }
     pysess = (PySSLSession *)value;