diff --git a/libpkgconf/stdinc.h b/libpkgconf/stdinc.h
index 6858503..b38870b 100644
--- a/libpkgconf/stdinc.h
+++ b/libpkgconf/stdinc.h
@@ -59,6 +59,7 @@
 # include <dirent.h>
 # include <unistd.h>
 # include <limits.h>
+# include <strings.h>
 # ifdef PATH_MAX
 #  define PKGCONF_ITEM_SIZE (PATH_MAX + 1024)
 # else