diff --git a/fuzzers/010-lutinit/generate.sh b/fuzzers/010-lutinit/generate.sh
index 04d134f0..e0bcd7aa 100644
--- a/fuzzers/010-lutinit/generate.sh
+++ b/fuzzers/010-lutinit/generate.sh
@@ -8,6 +8,9 @@ vivado -mode batch -source ../generate.tcl
 
 for i in 0 1 2; do
 	../../../tools/bitread -F $XRAY_ROI_FRAMES -o design_$i.bits -zy design_$i.bit
+done
+
+for i in 0 1 2; do
 	python3 ../generate.py $i
 done
 
diff --git a/fuzzers/011-ffconfig/Makefile b/fuzzers/011-ffconfig/Makefile
index f4fd93a3..d0dc3e6b 100644
--- a/fuzzers/011-ffconfig/Makefile
+++ b/fuzzers/011-ffconfig/Makefile
@@ -19,8 +19,11 @@ $(SPECIMENS_OK):
 	bash generate.sh $(subst /OK,,$@)
 	touch $@
 
+regen:
+	set -ex; for d in $(SPECIMENS); do cd $$d; for i in 0 1 2 3 4 5 6 7 8 9; do python3 ../generate.py $$i; done; cd ..; done
+
 clean:
 	rm -rf specimen_[0-9][0-9][0-9]/ seg_clbll.segbits seg_clblm.segbits
 
-.PHONY: database pushdb clean
+.PHONY: database pushdb regen clean
 
diff --git a/fuzzers/011-ffconfig/generate.sh b/fuzzers/011-ffconfig/generate.sh
index 877bd0c4..ea220557 100644
--- a/fuzzers/011-ffconfig/generate.sh
+++ b/fuzzers/011-ffconfig/generate.sh
@@ -8,6 +8,9 @@ vivado -mode batch -source ../generate.tcl
 
 for i in {0..9}; do
 	../../../tools/bitread -F $XRAY_ROI_FRAMES -o design_$i.bits -zy design_$i.bit
+done
+
+for i in {0..9}; do
 	python3 ../generate.py $i
 done