1 files changed, 4 insertions, 0 deletions
diff --git a/src/import/import.c b/src/import/import.c
index e2fc250..66bd541 100644
--- a/src/import/import.c
+++ b/src/import/import.c
@@ -9,7 +9,11 @@
 
 void read_file(void *ctx, const char *filename, int is_mtl, const char *obj_filename, char **buf, size_t *len)
 {
+	lua_State *L = ctx;
 	FILE *f = fopen(filename, "rb");
+	if (f == NULL) {
+		luaL_error(L, "failed to open file \"%s\"", filename);
+	}
 	fseek(f, 0, SEEK_END);
 	*len = ftell(f);
 	fseek(f, 0, SEEK_SET);