diff --git a/net/libdnet/Portfile b/net/libdnet/Portfile
index 16d5f35aded..5129ccb14b5 100644
--- a/net/libdnet/Portfile
+++ b/net/libdnet/Portfile
@@ -23,4 +23,6 @@ long_description    libdnet provides a simplified, portable interface to \
 checksums           rmd160 43d27783b6fd57405d7ff747acf465142b78ebf9 \
                     sha256 95611c6d2703f1772fc01ce74acf4ebcc4bcd4315cede35b343bb90dc43bfd8f
 
+depends_build       path:bin/pkg-config:pkgconfig
+
 configure.args      --with-check=no