diff --git a/test/generate/README b/test/generate/README
deleted file mode 100644
index 6f94e77..0000000
--- a/test/generate/README
+++ /dev/null
@@ -1,2 +0,0 @@
-Files in this directory are generated by `make files` in ./test by calling osmosis and gzip.
-The sources for these files are in ./test.
diff --git a/test/generated/README b/test/generated/README
new file mode 100644
index 0000000..22bd933
--- /dev/null
+++ b/test/generated/README
@@ -0,0 +1,6 @@
+Files in this directory are generated by `make files` in ./test by calling osmosis and gzip.
+The sources for these files are in ./test.
+
+Generated files need to be commited in separate commit! Otherwise source and
+generated file will have the same mtime when checked out from git and make will
+try to regenerate the file.
diff --git a/test/generate/any_any.pbf b/test/generated/any_any.pbf
similarity index 100%
rename from test/generate/any_any.pbf
rename to test/generated/any_any.pbf
diff --git a/test/generate/complete_db.osc.gz b/test/generated/complete_db.osc.gz
similarity index 100%
rename from test/generate/complete_db.osc.gz
rename to test/generated/complete_db.osc.gz
diff --git a/test/generate/complete_db.pbf b/test/generated/complete_db.pbf
similarity index 100%
rename from test/generate/complete_db.pbf
rename to test/generated/complete_db.pbf
diff --git a/test/generate/expire_tiles.osc.gz b/test/generated/expire_tiles.osc.gz
similarity index 100%
rename from test/generate/expire_tiles.osc.gz
rename to test/generated/expire_tiles.osc.gz
diff --git a/test/generate/expire_tiles.pbf b/test/generated/expire_tiles.pbf
similarity index 100%
rename from test/generate/expire_tiles.pbf
rename to test/generated/expire_tiles.pbf
diff --git a/test/generate/route_relation.osc.gz b/test/generated/route_relation.osc.gz
similarity index 100%
rename from test/generate/route_relation.osc.gz
rename to test/generated/route_relation.osc.gz
diff --git a/test/generate/route_relation.pbf b/test/generated/route_relation.pbf
similarity index 100%
rename from test/generate/route_relation.pbf
rename to test/generated/route_relation.pbf
diff --git a/test/generate/single_table.osc.gz b/test/generated/single_table.osc.gz
similarity index 100%
rename from test/generate/single_table.osc.gz
rename to test/generated/single_table.osc.gz
diff --git a/test/generate/single_table.pbf b/test/generated/single_table.pbf
similarity index 100%
rename from test/generate/single_table.pbf
rename to test/generated/single_table.pbf