diff --git a/configure.ac b/configure.ac
index c04213af..c42b80f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -649,7 +649,7 @@ AC_CONFIG_FILES([
 Makefile
 doc/Makefile
 examples/Makefile
-include/coap/coap.h
+include/coap2/coap.h
 man/coap.txt
 man/coap_attribute.txt
 man/coap_context.txt