diff --git a/src/decoding.h b/src/decoding.h
index 31be032..03dad47 100644
--- a/src/decoding.h
+++ b/src/decoding.h
@@ -28,6 +28,7 @@
 	static int tlli_from_ul_data(const uint8_t *data, uint8_t len,
 					uint32_t *tlli);
 	static uint8_t get_ms_class_by_capability(MS_Radio_Access_capability_t *cap);
+	static uint8_t get_egprs_ms_class_by_capability(MS_Radio_Access_capability_t *cap);
 
 	static void extract_rbb(const uint8_t *rbb, char *extracted_rbb);
 };