diff --git a/src/cmd/cmd.c b/src/cmd/cmd.c
index 41ae78cdd3..fd4fc78803 100644
--- a/src/cmd/cmd.c
+++ b/src/cmd/cmd.c
@@ -620,7 +620,9 @@ cmd_AddParmAlias(struct cmd_syndesc *as, int pos, char *alias)
 	return CMD_EXCESSPARMS;
 
     item = calloc(1, sizeof(struct cmd_item));
+    assert(item != NULL);
     item->data = strdup(alias);
+    assert(item->data != NULL);
     item->next = as->parms[pos].aliases;
     as->parms[pos].aliases = item;
 
@@ -1445,8 +1447,10 @@ cmd_OptionAsList(struct cmd_syndesc *syn, int pos, struct cmd_item **value)
     start = str;
     while ((end = strchr(start, ' '))) {
 	item = calloc(1, sizeof(struct cmd_item));
+	assert(item != NULL);
 	len = end - start + 1;
 	item->data = malloc(len);
+	assert(item->data != NULL);
 	strlcpy(item->data, start, len);
 	*last = item;
 	last = &item->next;
@@ -1456,8 +1460,10 @@ cmd_OptionAsList(struct cmd_syndesc *syn, int pos, struct cmd_item **value)
     /* Catch the final element */
     if (*start != '\0') {
 	item = calloc(1, sizeof(struct cmd_item));
+	assert(item != NULL);
 	len = strlen(start) + 1;
 	item->data = malloc(len);
+	assert(item->data != NULL);
 	strlcpy(item->data, start, len);
 	*last = item;
     }