diff --git a/mozilla/js2/src/Makefile.am b/mozilla/js2/src/Makefile.am
index 1e2ec486f96..a62d67bf89b 100644
--- a/mozilla/js2/src/Makefile.am
+++ b/mozilla/js2/src/Makefile.am
@@ -11,9 +11,12 @@ epimetheus_SOURCES =  \
 	formatter.cpp \
 	hash.cpp \
 	js2array.cpp \
+	js2boolean.cpp \
 	js2date.cpp \
 	js2engine.cpp \
+	js2error.cpp \
 	js2eval.cpp \
+	js2function.cpp \
 	js2math.cpp \
 	js2metadata.cpp \
 	js2number.cpp \