diff --git a/tests/test-camera-list.c b/tests/test-camera-list.c
index cf0ebfa65..448fedb1a 100644
--- a/tests/test-camera-list.c
+++ b/tests/test-camera-list.c
@@ -183,6 +183,7 @@ main (int argc, char *argv[])
 	int i;
 	int count;
 	const char *fmt_str = NULL;
+	char lastmodel[200];
 
 	parse_command_line (argc, argv);
 
@@ -244,6 +245,7 @@ main (int argc, char *argv[])
 		break;
 	}
 
+	strcpy(lastmodel,"xxx");
 	/* For each camera in the list, add a text snippet to the 
 	 * output file. */
 	for (i = 0; i < count; i++) {
@@ -252,6 +254,12 @@ main (int argc, char *argv[])
 		CHECK (gp_abilities_list_get_abilities (al, i, &abilities));
 		camlib_basename = path_basename(abilities.library);
 
+		if (!strcmp(lastmodel, abilities.model)) {
+			fprintf(stderr,"Duplicated model name in camera list: %s\n", lastmodel);
+			exit(1);
+		}
+		strcpy(lastmodel,abilities.model);
+
 		switch (format) {
 		case FMT_HEADED_TEXT:
 			if ( ((i%25)== 0) &&