diff --git a/libbutl/buildfile b/libbutl/buildfile
index ba4ad96..f5356a1 100644
--- a/libbutl/buildfile
+++ b/libbutl/buildfile
@@ -1,7 +1,7 @@
 # file      : libbutl/buildfile
 # license   : MIT; see accompanying LICENSE file
 
-lib{butl}: {hxx ixx txx cxx}{** -uuid-* +uuid-io         \
+lib{butl}: {h hxx ixx txx cxx}{** -uuid-* +uuid-io       \
                                 -win32-utility           \
                                 -mingw-*                 \
                                 -version                 \
@@ -154,7 +154,7 @@ else
 # Install into the libbutl/ subdirectory of, say, /usr/include/
 # recreating subdirectories.
 #
-{hxx ixx txx}{*}:
+{h hxx ixx txx}{*}:
 {
   install         = include/libbutl/
   install.subdirs = true
