diff --git a/examples/aobench_instrumented/Makefile b/examples/aobench_instrumented/Makefile
index d47a5c31..fe11c888 100644
--- a/examples/aobench_instrumented/Makefile
+++ b/examples/aobench_instrumented/Makefile
@@ -14,7 +14,7 @@ dirs:
 clean:
 	/bin/rm -rf objs *~ ao
 
-ao: objs/ao.o objs/instrument.o objs/ao_ispc.o ../tasksys.cpp
+ao: objs/ao.o objs/instrument.o objs/ao_instrumented_ispc.o ../tasksys.cpp
 	$(CXX) $(CXXFLAGS) -o $@ $^ -lm -lpthread
 
 objs/%.o: %.cpp dirs
@@ -23,4 +23,4 @@ objs/%.o: %.cpp dirs
 objs/ao.o: objs/ao_instrumented_ispc.h
 
 objs/%_ispc.h objs/%_ispc.o: %.ispc dirs
-	$(ISPC) $(ISPCFLAGS) $< -o objs/$*_ispc.o -h objs/$*_instrumented_ispc.h
+	$(ISPC) $(ISPCFLAGS) $< -o objs/$*_ispc.o -h objs/$*_ispc.h