diff --git a/core/definitions.mk b/core/definitions.mk
index 13af6fc..aa23d9d 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -269,7 +269,7 @@
 define all-renderscript-files-under
 $(patsubst ./%,%, \
   $(shell cd $(LOCAL_PATH) ; \
-          find $(1) -name "*.rs" -and -not -name ".*") \
+          find $(1) \( -name "*.rs" -or -name "*.fs" \) -and -not -name ".*") \
   )
 endef
 
diff --git a/core/java.mk b/core/java.mk
index 66f9a02..99e67f4 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -133,8 +133,9 @@
 
 ###############################################################
 ## .rs files: RenderScript sources to .java files and .bc files
+## .fs files: Filterscript sources to .java files and .bc files
 ###############################################################
-renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
+renderscript_sources := $(filter %.rs %.fs,$(LOCAL_SRC_FILES))
 # Because names of the java files from RenderScript are unknown until the
 # .rs file(s) are compiled, we have to depend on a timestamp file.
 RenderScript_file_stamp :=
@@ -196,7 +197,7 @@
 
 # include the dependency files (.d) generated by llvm-rs-cc.
 renderscript_generated_dep_files := $(addprefix $(renderscript_intermediate)/, \
-    $(patsubst %.rs,%.d, $(notdir $(renderscript_sources))))
+    $(patsubst %.fs,%.d, $(patsubst %.rs,%.d, $(notdir $(renderscript_sources)))))
 -include $(renderscript_generated_dep_files)
 
 LOCAL_INTERMEDIATE_TARGETS += $(RenderScript_file_stamp)