diff --git a/gril/grilutil.c b/gril/grilutil.c
index 89deceea..cf34d53a 100644
--- a/gril/grilutil.c
+++ b/gril/grilutil.c
@@ -60,27 +60,6 @@ int ril_protocol_string_to_ofono_protocol(gchar *protocol_str)
 	return result;
 }
 
-const char *ril_apptype_to_string(int app_type)
-{
-
-	switch (app_type) {
-	case RIL_APPTYPE_UNKNOWN:
-		return "UNKNOWN";
-	case RIL_APPTYPE_SIM:
-		return "SIM";
-	case RIL_APPTYPE_USIM:
-		return "USIM";
-	case RIL_APPTYPE_RUIM:
-		return "RUIM";
-	case RIL_APPTYPE_CSIM:
-		return "CSIM";
-	case RIL_APPTYPE_ISIM:
-		return "ISIM";
-	default:
-		return "<INVALID>";
-	}
-}
-
 const char *ril_authtype_to_string(int auth_type)
 {
 	switch (auth_type) {
diff --git a/gril/grilutil.h b/gril/grilutil.h
index fe0752de..a6915d44 100644
--- a/gril/grilutil.h
+++ b/gril/grilutil.h
@@ -32,7 +32,6 @@ extern "C" {
 #include "gril.h"
 
 int ril_protocol_string_to_ofono_protocol(gchar *protocol_str);
-const char *ril_apptype_to_string(int app_type);
 const char *ril_authtype_to_string(int auth_type);
 const char *ril_cardstate_to_string(int card_state);
 const char *ril_error_to_string(int error);