diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c
index 80d469e..026a923 100644
--- a/src/gsm/gsm0808_utils.c
+++ b/src/gsm/gsm0808_utils.c
@@ -221,7 +221,7 @@
 	/* See also 3GPP TS 48.008 3.2.2.103 Speech Codec List */
 	uint8_t header = 0;
 	uint8_t *old_tail;
-	bool type_extended = false;
+	bool type_extended;
 
 	/* Note: Extended codec types are codec types that require 8 instead
 	 * of 4 bit to fully specify the selected codec. In the following,