diff --git a/plugin/auth-pam/auth-pam.c b/plugin/auth-pam/auth-pam.c
index 52c62db4..b029f85c 100644
--- a/plugin/auth-pam/auth-pam.c
+++ b/plugin/auth-pam/auth-pam.c
@@ -305,6 +305,8 @@ openvpn_plugin_open_v1 (unsigned int *type_mask, const char *argv[], const char
    * Allocate our context
    */
   context = (struct auth_pam_context *) calloc (1, sizeof (struct auth_pam_context));
+  if (!context)
+    goto error;
   context->foreground_fd = -1;
 
   /*
@@ -492,7 +494,7 @@ openvpn_plugin_abort_v1 (openvpn_plugin_handle_t handle)
   struct auth_pam_context *context = (struct auth_pam_context *) handle;
 
   /* tell background process to exit */
-  if (context->foreground_fd >= 0)
+  if (context && context->foreground_fd >= 0)
     {
       send_control (context->foreground_fd, COMMAND_EXIT);
       close (context->foreground_fd);
diff --git a/plugin/down-root/down-root.c b/plugin/down-root/down-root.c
index 5e0c002e..7cf8f181 100644
--- a/plugin/down-root/down-root.c
+++ b/plugin/down-root/down-root.c
@@ -274,6 +274,8 @@ openvpn_plugin_open_v1 (unsigned int *type_mask, const char *argv[], const char
    * Allocate our context
    */
   context = (struct down_root_context *) calloc (1, sizeof (struct down_root_context));
+  if (!context)
+    goto error;
   context->foreground_fd = -1;
 
   /*
@@ -434,7 +436,7 @@ openvpn_plugin_abort_v1 (openvpn_plugin_handle_t handle)
 {
   struct down_root_context *context = (struct down_root_context *) handle;
 
-  if (context->foreground_fd >= 0)
+  if (context && context->foreground_fd >= 0)
     {
       /* tell background process to exit */
       send_control (context->foreground_fd, COMMAND_EXIT);