diff --git a/doc/CHANGES-staging/format_sln_support_for_slin.txt b/doc/CHANGES-staging/format_sln_support_for_slin.txt
new file mode 100644
index 0000000000..3d66536ccd
--- /dev/null
+++ b/doc/CHANGES-staging/format_sln_support_for_slin.txt
@@ -0,0 +1,5 @@
+Subject: format_sln
+
+format_sln now recognizes '.slin' as a valid
+file extension in addition to the existing
+'.sln' and '.raw'.
diff --git a/formats/format_sln.c b/formats/format_sln.c
index 80d3484002..98985ba86a 100644
--- a/formats/format_sln.c
+++ b/formats/format_sln.c
@@ -127,7 +127,7 @@ static off_t slinear_tell(struct ast_filestream *fs)
 static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext){return generic_read(s, whennext, 320);}
 static struct ast_format_def slin_f = {
 	.name = "sln",
-	.exts = "sln|raw",
+	.exts = "sln|slin|raw",
 	.write = slinear_write,
 	.seek = slinear_seek,
 	.trunc = slinear_trunc,