diff --git a/htmlparser/src/Makefile b/htmlparser/src/Makefile
index 5c70ce221928..cafffc2a0720 100644
--- a/htmlparser/src/Makefile
+++ b/htmlparser/src/Makefile
@@ -34,6 +34,7 @@ CPPSRCS =     \
   COtherDTD.cpp \
   nsHTMLParser.cpp  \
   nsHTMLTokens.cpp  \
+  prstrm.cpp \
   $(NULL)
 
 EXPORTS =     \
diff --git a/parser/htmlparser/src/Makefile b/parser/htmlparser/src/Makefile
index 5c70ce221928..cafffc2a0720 100644
--- a/parser/htmlparser/src/Makefile
+++ b/parser/htmlparser/src/Makefile
@@ -34,6 +34,7 @@ CPPSRCS =     \
   COtherDTD.cpp \
   nsHTMLParser.cpp  \
   nsHTMLTokens.cpp  \
+  prstrm.cpp \
   $(NULL)
 
 EXPORTS =     \