diff --git a/include/asterisk/slin.h b/include/asterisk/slin.h
index ab7d843abe..e9971a7c49 100644
--- a/include/asterisk/slin.h
+++ b/include/asterisk/slin.h
@@ -62,7 +62,7 @@ static inline struct ast_frame *slin8_sample(void)
 {
 	static struct ast_frame f = {
 		.frametype = AST_FRAME_VOICE,
-		.datalen = sizeof(ex_slin8) * 2,
+		.datalen = sizeof(ex_slin8),
 		.samples = ARRAY_LEN(ex_slin8),
 		.mallocd = 0,
 		.offset = 0,
@@ -78,7 +78,7 @@ static inline struct ast_frame *slin16_sample(void)
 {
 	static struct ast_frame f = {
 		.frametype = AST_FRAME_VOICE,
-		.datalen = sizeof(ex_slin16) * 2,
+		.datalen = sizeof(ex_slin16),
 		.samples = ARRAY_LEN(ex_slin16),
 		.mallocd = 0,
 		.offset = 0,