diff --git a/mozilla/nsprpub/configure b/mozilla/nsprpub/configure
index d4ea1f19862..9baac61f7cd 100755
--- a/mozilla/nsprpub/configure
+++ b/mozilla/nsprpub/configure
@@ -3684,7 +3684,7 @@ EOF
     MKSHLIB='vmsld $(OPTIMIZER)'
     ;;
 
-*-osf1*)
+*-osf*)
     cat >> confdefs.h <<\EOF
 #define XP_UNIX 1
 EOF
diff --git a/mozilla/nsprpub/configure.in b/mozilla/nsprpub/configure.in
index 7071f7c867f..5a1aa50373f 100644
--- a/mozilla/nsprpub/configure.in
+++ b/mozilla/nsprpub/configure.in
@@ -1197,7 +1197,7 @@ mips-sony-newsos*)
     MKSHLIB='vmsld $(OPTIMIZER)'
     ;;
 
-*-osf1*)
+*-osf*)
     AC_DEFINE(XP_UNIX)
     AC_DEFINE(OSF1)