diff --git a/changelog.txt b/changelog.txt
index 6242ba6..3d849cd 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,5 +1,6 @@
 2019-09-11: Update all signs images for basic_signs and for signs_lib 
-commit 4ff54c9a and later
+commit 4ff54c9a and later.  Fix wrong filenames on signs_lib default 
+wood/steel wall signs.
 
 2019-06-27: run all images through pngcrush+optipng, or jpegoptim (limit 95%)
 
diff --git a/basic_signs_steel.jpg b/signs_lib_sign_wall_steel.jpg
similarity index 100%
rename from basic_signs_steel.jpg
rename to signs_lib_sign_wall_steel.jpg
diff --git a/basic_signs_steel_edges.jpg b/signs_lib_sign_wall_steel_edges.jpg
similarity index 100%
rename from basic_signs_steel_edges.jpg
rename to signs_lib_sign_wall_steel_edges.jpg
diff --git a/basic_signs_steel_inv.png b/signs_lib_sign_wall_steel_inv.png
similarity index 100%
rename from basic_signs_steel_inv.png
rename to signs_lib_sign_wall_steel_inv.png
diff --git a/basic_signs_wooden.jpg b/signs_lib_sign_wall_wooden.jpg
similarity index 100%
rename from basic_signs_wooden.jpg
rename to signs_lib_sign_wall_wooden.jpg
diff --git a/basic_signs_wooden_edges.jpg b/signs_lib_sign_wall_wooden_edges.jpg
similarity index 100%
rename from basic_signs_wooden_edges.jpg
rename to signs_lib_sign_wall_wooden_edges.jpg
diff --git a/basic_signs_wooden_inv.png b/signs_lib_sign_wall_wooden_inv.png
similarity index 100%
rename from basic_signs_wooden_inv.png
rename to signs_lib_sign_wall_wooden_inv.png