diff --git a/libs/esl/src/esl_event.c b/libs/esl/src/esl_event.c
index e1b2663995..d3c4b4c072 100644
--- a/libs/esl/src/esl_event.c
+++ b/libs/esl/src/esl_event.c
@@ -391,6 +391,7 @@ ESL_DECLARE(int) esl_event_add_array(esl_event_t *event, const char *var, const
 	data = strdup(val + 7);
 	
 	len = (sizeof(char *) * max) + 1;
+	esl_assert(len);
 	array = malloc(len);
 	memset(array, 0, len);
 	
diff --git a/src/switch_event.c b/src/switch_event.c
index 5bff7a9400..79881e69ae 100644
--- a/src/switch_event.c
+++ b/src/switch_event.c
@@ -882,6 +882,8 @@ SWITCH_DECLARE(int) switch_event_add_array(switch_event_t *event, const char *va
 	data = strdup(val + 7);
 	
 	len = (sizeof(char *) * max) + 1;
+	switch_assert(len);
+
 	array = malloc(len);
 	memset(array, 0, len);