diff --git a/res/res_agi.c b/res/res_agi.c
index 27a13ffa52..dcce17f25f 100644
--- a/res/res_agi.c
+++ b/res/res_agi.c
@@ -1215,7 +1215,7 @@ static int handle_setvariable(struct ast_channel *chan, AGI *agi, int argc, char
 static int handle_getvariable(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 {
 	char *ret;
-	char tempstr[1024];
+	char tempstr[1024] = "";
 
 	if (argc != 3)
 		return RESULT_SHOWUSAGE;