diff --git a/xpcom/ds/MANIFEST b/xpcom/ds/MANIFEST
index 9012b32365c3..42e04a8f6623 100644
--- a/xpcom/ds/MANIFEST
+++ b/xpcom/ds/MANIFEST
@@ -1,3 +1,4 @@
+nsAlgorithm.h
 nsAVLTree.h
 nsAtomService.h
 nsCppSharedAllocator.h
diff --git a/xpcom/ds/Makefile.in b/xpcom/ds/Makefile.in
index 9b740d1e971e..f4c61c5dfae8 100644
--- a/xpcom/ds/Makefile.in
+++ b/xpcom/ds/Makefile.in
@@ -69,6 +69,7 @@ CPPSRCS		= \
 		$(NULL)
 
 EXPORTS		= \
+    nsAlgorithm.h \
 		nsAVLTree.h \
 		nsAtomService.h \
 		nsCppSharedAllocator.h \
diff --git a/xpcom/ds/makefile.win b/xpcom/ds/makefile.win
index 7a5d22aa333c..3cb126c5865f 100644
--- a/xpcom/ds/makefile.win
+++ b/xpcom/ds/makefile.win
@@ -28,7 +28,8 @@ MODULE = xpcom
 ## exports
 
 EXPORTS =                          \
-        nsTextFormatter.h           \
+        nsAlgorithm.h              \
+        nsTextFormatter.h          \
         nsAVLTree.h                \
         nsCppSharedAllocator.h     \
         nsCRT.h                    \