diff --git a/Makefile.am b/Makefile.am
index 4660a2e..6081787 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -12,7 +12,6 @@ libisofs_libisofs_la_LDFLAGS = \
 libisofs_libisofs_la_SOURCES = \
 	libisofs/builder.h \
 	libisofs/builder.c \
-	libisofs/error.h \
 	libisofs/node.h \
 	libisofs/node.c \
 	libisofs/tree.h \
@@ -52,7 +51,8 @@ libisofs_libisofs_la_SOURCES = \
 	libisofs/iso1999.c \
 	libisofs/data_source.c
 libinclude_HEADERS = \
-	libisofs/libisofs.h
+	libisofs/libisofs.h \
+	libisofs/error.h
 
 ## ========================================================================= ##
 
diff --git a/TODO b/TODO
index 6099908..e6528aa 100644
--- a/TODO
+++ b/TODO
@@ -7,7 +7,7 @@ TODO
 
 #00001 (node.h) -> consider adding new timestamps to IsoTreeNode
 OK #00002 (node.h) -> handle deletion of each kind of node 
-#00003 make error.h header public
+OK #00003 make error.h header public
 #00004 (libisofs.h) -> Add a get_mime_type() function.
 #00005 (node.c) -> optimize iso_dir_iter_take. 
 #00006 (libisofs.h) -> define more replace values when adding a node to a dir
diff --git a/libisofs/error.h b/libisofs/error.h
index 2ecae55..5f2b4ba 100644
--- a/libisofs/error.h
+++ b/libisofs/error.h
@@ -10,7 +10,6 @@
 
 /*
  * Error codes and return values for libisofs.
- * TODO #00003 make this header public
  */
 
 /*