diff --git a/main.cpp b/main.cpp
index fdac47770..917214c17 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1390,6 +1390,7 @@ std::pair<int, metadata> read_input(std::vector<source> &sources, char *fname, i
 				".pmtiles",
 				".csv",
 				".gz",
+			        ".fgb",
 			};
 
 			// Trim .json or .mbtiles from the name