diff --git a/fsim/Makefrag b/fsim/Makefrag
index 7dc1a551..d7087ead 100644
--- a/fsim/Makefrag
+++ b/fsim/Makefrag
@@ -40,7 +40,7 @@ VCS_OPTS = -notice -line +lint=all,noVCDE,noONGS,noUI -error=PCWM-L -timescale=1
 	-CC "-I$(realpath $(base_dir))/dramsim2" \
 	-CC "-std=c++11" \
 	-CC "-Wl,-rpath,$(RISCV)/lib" \
-        -CC "-include $(consts_header)" \
+	-CC "-include $(consts_header)" \
 	-e vcs_main \
 	$(RISCV)/lib/libfesvr.so \
 	$(sim_dir)/libdramsim.a \
@@ -57,14 +57,14 @@ VCS_OPTS = -notice -line +lint=all,noVCDE,noONGS,noUI -error=PCWM-L -timescale=1
 simv = $(sim_dir)/simv-$(MODEL)-$(CONFIG)
 $(simv) : $(sim_vsrcs) $(sim_csrcs) $(sim_dir)/libdramsim.a $(consts_header)
 	cd $(sim_dir) && \
-        rm -rf csrc && \
+	rm -rf csrc && \
 	$(VCS) $(VCS_OPTS) -o $(simv) \
 	-debug_pp \
 
 simv_debug = $(sim_dir)/simv-$(MODEL)-$(CONFIG)-debug
 $(simv_debug) : $(sim_vsrcs) $(sim_csrcs) $(sim_dir)/libdramsim.a $(consts_header)
 	cd $(sim_dir) && \
-        rm -rf csrc && \
+	rm -rf csrc && \
 	$(VCS) $(VCS_OPTS) -o $(simv_debug) \
 	+define+DEBUG -debug_pp \
 
diff --git a/vsim/Makefrag b/vsim/Makefrag
index 9ab7f05f..2e7430a6 100644
--- a/vsim/Makefrag
+++ b/vsim/Makefrag
@@ -39,7 +39,7 @@ VCS_OPTS = -notice -line +lint=all,noVCDE,noONGS,noUI -error=PCWM-L -timescale=1
 	-CC "-I$(realpath $(base_dir))/dramsim2" \
 	-CC "-std=c++11" \
 	-CC "-Wl,-rpath,$(RISCV)/lib" \
-        -CC "-include $(consts_header)" \
+	-CC "-include $(consts_header)" \
 	-e vcs_main \
 	$(RISCV)/lib/libfesvr.so \
 	$(sim_dir)/libdramsim.a \
@@ -55,14 +55,14 @@ VCS_OPTS = -notice -line +lint=all,noVCDE,noONGS,noUI -error=PCWM-L -timescale=1
 simv = $(sim_dir)/simv-$(MODEL)-$(CONFIG)
 $(simv) : $(sim_vsrcs) $(sim_csrcs) $(sim_dir)/libdramsim.a $(consts_header)
 	cd $(sim_dir) && \
-        rm -rf csrc && \
+	rm -rf csrc && \
 	$(VCS) $(VCS_OPTS) -o $(simv) \
 	-debug_pp \
 
 simv_debug = $(sim_dir)/simv-$(MODEL)-$(CONFIG)-debug
 $(simv_debug) : $(sim_vsrcs) $(sim_csrcs) $(sim_dir)/libdramsim.a $(consts_header)
 	cd $(sim_dir) && \
-        rm -rf csrc && \
+	rm -rf csrc && \
 	$(VCS) $(VCS_OPTS) -o $(simv_debug) \
 	+define+DEBUG -debug_pp \