diff --git a/nbbuild/build.xml b/nbbuild/build.xml
--- a/nbbuild/build.xml
+++ b/nbbuild/build.xml
@@ -1226,7 +1226,7 @@
       <arg file="${test.user.dir}"/>
       <arg line="${sanitystart.args}"/>
     </exec>
-    <exec os="Linux SunOS Solaris Mac OS X" dir="." executable="sh" failonerror="yes" timeout="600000">
+    <exec os="Linux SunOS Solaris Mac OS X OpenBSD" dir="." executable="sh" failonerror="yes" timeout="600000">
       <arg value="${netbeans.dest.dir}/bin/netbeans"/>
       <arg value="--jdkhome"/>
       <arg file="${nbjdk.home}"/>
@@ -1310,7 +1310,7 @@
       <arg line="${tryme.args}"/>
       <arg line="${tryme.debug.args}" />
     </exec>
-    <exec os="Linux SunOS Solaris Mac OS X" dir="." executable="sh" failonerror="yes">
+    <exec os="Linux SunOS Solaris Mac OS X OpenBSD" dir="." executable="sh" failonerror="yes">
       <arg value="${netbeans.dest.dir}/bin/netbeans"/>
       <arg value="--jdkhome"/>
       <arg file="${nbjdk.home}"/>
diff --git a/openide.util/src/org/openide/util/Utilities.java b/openide.util/src/org/openide/util/Utilities.java
--- a/openide.util/src/org/openide/util/Utilities.java
+++ b/openide.util/src/org/openide/util/Utilities.java
@@ -175,6 +175,11 @@
      */
     public static final int OS_FREEBSD = OS_OTHER << 1;
     
+    /** Operating system is OpenBSD
+     * @since ?
+     */
+    public static final int OS_OPENBSD = OS_FREEBSD << 1;
+        
     /** Operating system is Windows Vista.
      * @since 7.17
      */
@@ -185,7 +190,7 @@
 
     /** A mask for Unix platforms. */
     public static final int OS_UNIX_MASK = OS_SOLARIS | OS_LINUX | OS_HP | OS_AIX | OS_IRIX | OS_SUNOS | OS_TRU64 |
-        OS_MAC | OS_FREEBSD;
+        OS_MAC | OS_FREEBSD | OS_OPENBSD;
 
     /** A height of the windows's taskbar */
     public static final int TYPICAL_WINDOWS_TASKBAR_HEIGHT = 27;
@@ -339,6 +344,8 @@
                 operatingSystem = OS_MAC;
             } else if (osName.toLowerCase(Locale.US).startsWith("freebsd")) { // NOI18N 
                 operatingSystem = OS_FREEBSD;
+            } else if (osName.equals("OpenBSD")) { // NOI18N
+                operatingSystem = OS_OPENBSD;                
             } else {
                 operatingSystem = OS_OTHER;
             }