diff --git a/README.md b/README.md
index 9431d3b..771f32b 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,8 @@
 
 * `x86_64` - if the value is one of: `x8664`, `amd64`, `ia32e`, `em64t`, `x64`
 * `x86_32` - if the value is one of: `x8632`, `x86`, `i386`, `i486`, `i586`, `i686`, `ia32`, `x32`
-* `itanium_64` - if the value is one of: `ia64`, `itanium64`
+* `itanium_64` - if the value is one of: `ia64`, `ia64w`, `itanium64`
+* `itanium_32` - if the value is one of: `ia64n`
 * `sparc_32` - if the value is one of: `sparc`, `sparc32`
 * `sparc_64` - if the value is one of: `sparcv9`, `sparc64`
 * `arm_32` - if the value is one of: `arm`, `arm32`
diff --git a/src/main/java/kr/motd/maven/os/Detector.java b/src/main/java/kr/motd/maven/os/Detector.java
index 4e34be9..80e5329 100644
--- a/src/main/java/kr/motd/maven/os/Detector.java
+++ b/src/main/java/kr/motd/maven/os/Detector.java
@@ -180,9 +180,12 @@ private static String normalizeArch(String value) {
         if (value.matches("^(x8632|x86|i[3-6]86|ia32|x32)$")) {
             return "x86_32";
         }
-        if (value.matches("^(ia64|itanium64)$")) {
+        if (value.matches("^(ia64w?|itanium64)$")) {
             return "itanium_64";
         }
+        if ("ia64n".equals(value)) {
+            return "itanium_32";
+        }
         if (value.matches("^(sparc|sparc32)$")) {
             return "sparc_32";
         }