diff --git a/README b/README
index 022c035..9bbecf0 100644
--- a/README
+++ b/README
@@ -55,6 +55,11 @@
  * devel/gmake
  * devel/libpci
 
+On OpenBSD, you need the following ports:
+
+ * devel/gmake
+ * sysutils/pciutils
+
 To compile on Linux, use:
 
  make
@@ -76,6 +81,10 @@
  ln -s /usr/pkg/include/pciutils pci
  gmake CPPFLAGS=-I. LDFLAGS="-L/usr/pkg/lib -Wl,-rpath-link,/usr/pkg/lib"
 
+To compile on OpenBSD, use:
+
+ gmake
+
 To compile and run on Darwin/Mac OS X:
 
  Install DirectIO from coresystems GmbH.