diff --git a/src/simutil.h b/src/simutil.h
index ece51451..e0b9d72a 100644
--- a/src/simutil.h
+++ b/src/simutil.h
@@ -65,6 +65,17 @@ enum sim_fileid {
 	SIM_DFGSM_FILEID =			0x7F20,
 };
 
+enum sim_isim_fileid {
+	SIM_ISIM_EFIMPI_FILEID =		0x6F02,
+	SIM_ISIM_EFDOMAIN_FILEID =		0x6F03,
+	SIM_ISIM_EFIMPU_FILEID =		0x6F04,
+	SIM_ISIM_EFARR_FILEID =			0x6F06,
+	SIM_ISIM_EFIST_FILEID =			0x6F07,
+	SIM_ISIM_EFPCSCF_FILEID =		0x6F09,
+	SIM_ISIM_EFSMS_FILEID =			0x6F3C,
+	SIM_ISIM_EFSMSP_FILEID =		0x6F42
+};
+
 /* 51.011 Section 9.3 */
 enum sim_file_access {
 	SIM_FILE_ACCESS_ALWAYS =	0,