diff --git a/GNUmakefile b/GNUmakefile
index 8cc588a..936dfee 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -33,7 +33,7 @@ vpath %.F90 $(SRC_DIR)
 # Targets
 all: tests main
 
-main: builddirs $(APP_DIR)/Diffusion $(APP_DIR)/DiffusionBatch
+main: builddirs $(APP_DIR)/Diffusion
 
 tests: builddirs $(TST_DIR)/tTiffReader $(TST_DIR)/tTiffStackReader $(TST_DIR)/tDatReader $(TST_DIR)/tVolumeFraction $(TST_DIR)/tTortuosity
 
@@ -51,10 +51,6 @@ $(APP_DIR)/Diffusion: Diffusion.cpp $(addprefix build/props/,TortuosityDirect.o
 	@mkdir -p $(@D)
 	$(CXX) $(CXXFLAGS) $(INCLUDE) -o $@ $^ $(LDFLAGS)
 
-$(APP_DIR)/DiffusionBatch: DiffusionBatch.cpp $(addprefix build/props/,TortuosityDirect.o TortuosityHypre.o Tortuosity_filcc.o Tortuosity_poisson_3d.o TortuosityHypreFill.o VolumeFraction.o) build/io/TiffReader.o build/io/CathodeWrite.o
-	@mkdir -p $(@D)
-	$(CXX) $(CXXFLAGS) $(INCLUDE) -o $@ $^ $(LDFLAGS)
-
 # Executable tests
 $(TST_DIR)/tTiffReader: tTiffReader.cpp build/io/TiffReader.o
 	@mkdir -p $(@D)